From Cyclical Continuity to Revolutionary Rupture: Explaining China's Dynastic Transitions

Chinese history is often characterized by the concept of the dynastic cycle, a theoretical framework suggesting a repetitive pattern of rise, prosperity, decline, and fall for each imperial dynasty. This model implies a significant degree of path dependency, where fundamental social, economic, and political structures largely persist despite changes in ruling houses. While the transition from the Ming to the Qing dynasty largely exemplifies this traditional pattern of continuity, the shift from the Republic of China (ROC) to the People's Republic of China (PRC) represents a profound and fundamental rupture. This report will detail these contrasting patterns, highlighting the radically different ideological foundations and unprecedented systemic transformations that distinguish the modern revolutionary change from its imperial predecessors.

The Traditional Dynastic Cycle: Path Dependency in Imperial China

The traditional understanding of Chinese history is deeply rooted in the concept of the dynastic cycle. This theory posits that each dynasty ascends to a period of political, cultural, and economic zenith, followed by a decline marked by moral corruption, loss of the Mandate of Heaven, and eventual collapse, only to be succeeded by a new dynasty. This cyclical view suggests a surface pattern of repetitive motifs and an underlying continuity in social or economic structures, implying limited fundamental development or change across these transitions.

Principles of the Dynastic Cycle

The dynastic cycle typically unfolds in three main phases: the inception of the dynasty, its peak, and finally, its political and economic decline leading to collapse. This process is often described as a "periodic alternation between despotism and anarchy". A new ruler, often a charismatic leader emerging from chaos, establishes a new dynasty and gains the Mandate of Heaven, ushering in an era of prosperity and population growth. However, as the dynasty matures, corruption becomes rampant within the imperial court, leading to instability, natural disasters, famine, and widespread rebellion. This signifies the ruler's loss of the Mandate of Heaven, culminating in the dynasty's overthrow. This legitimizing principle, the Mandate of Heaven, was crucial for both native Han and non-Han rulers to assert their authority.

The cyclical nature of this pattern, characterized by the interplay of power and corruption, has been observed for millennia, from the Han and Tang dynasties to the Ming and Qing. Despite the violent overthrows and changes in ruling families, many fundamental institutions and social structures tended to endure. Dynastic transitions typically occurred through military conquest or usurpation, but the underlying imperial system, with its centralized bureaucracy and hierarchical social order, generally remained intact.This enduring pattern is famously captured by the Chinese proverb: "After a long split, a union will occur; after a long union, a split will occur".

Case Study: The Ming-Qing Transition (1644): A Paradigm of Path Dependency

The transition from the Ming dynasty (1368–1644) to the Qing dynasty (1644–1912) serves as a prime example of path dependency within the traditional Chinese dynastic cycle. Despite the Qing being founded by non-Han Manchus who conquered the Han-dominated Ming, the new rulers largely adopted and perpetuated existing Chinese imperial structures and societal norms.

Political and Administrative Persistence

The early Qing emperors strategically adopted the bureaucratic structures and institutions of the preceding Ming dynasty. The Ming government was traditionally organized into three branches—civil, military, and surveillance—with the imperial household and its eunuchs holding a distinct and influential position. The Qing largely maintained this overall framework, though they implemented a system of dual appointments, splitting key positions between Han and Manchus. A notable administrative adjustment was the diminished importance of the Grand Secretariat, a key Ming policymaking body, which evolved into an imperial chancery under the Qing. Concurrently, the Qing emperors centralized authority under the crown through the Inner Court, dominated by the imperial family and Manchu nobility, with the Grand Council emerging as its core institution in the 1720s.

A compelling illustration of this political and administrative continuity is found in the legal system. The Great Qing Code of 1740 "practically duplicates its Ming counterpart," the Great Ming Code of 1397, for the purpose of "convenient empire-building". All seven chapters and thirty sections of the Ming Code were carried over to the Qing Code without alteration, and only one article was newly created in the entire Qing Code. Furthermore, most official commentaries within the Qing Code originated from Ming sources. This remarkable legal continuity reflects a deep similarity in social structure, governmental institutions, and cultural values between the two dynasties.

The Qing's comprehensive adoption of Ming administrative and legal systems, despite their status as a conquering "foreign" dynasty, demonstrates a sophisticated understanding of political pragmatism and the imperative for legitimization. The Ming system was a well-established and effective apparatus for governing a vast and complex empire. By adopting it, the Qing minimized disruption, streamlined administration, and leveraged existing institutional knowledge. More profoundly, by embracing the Han Chinese administrative and legal framework, the Qing could present themselves as legitimate successors to the Mandate of Heaven, rather than as alien conquerors. This strategy was crucial for securing the cooperation of the Han elite and populace, as the Qing explicitly aimed to emphasize a "Confucian universal world order instead of an ethnic mission". This strategic adoption underscores the deep-seated path dependency of imperial Chinese governance, where the fundamental 

form of the state—its imperial bureaucracy and legal system—proved more enduring than the specific ruling family or its ethnic origin. It highlights the Manchu rulers' political acumen in integrating themselves into the existing Chinese political tradition rather than attempting a radical systemic overhaul.

Economic and Social Continuities

The economic dynamism evident at the end of the Ming dynasty largely continued under the Qing, persisting until the Opium Wars in the 1840s. China's domestic economy during this period remained dynamic, commercializing, and even exhibited nascent industrializing tendencies in certain sectors. The Qing era witnessed a proliferation of markets and the evolution of complex market structures, including central markets collecting goods from lower-tier markets, and a gradual shift from periodic markets to stationary, everyday markets with permanent stores. A sophisticated merchant hierarchy also developed, with long-distance merchants establishing guild halls in distant regions to facilitate trade and provide support. The government's policy of requiring taxes to be paid in money (copper coins or silver) further stimulated economic growth by compelling farmers to sell their produce to acquire currency.

Chinese society under the early Qing remained highly stratified, mirroring the Ming structure. Hereditary status groups ranged from descendants of the imperial line to "mean people" at the bottom, including prostitutes, actors, and government underlings. Many professions, such as brewers, dyers, and doctors, were hereditary, passed down through generations. Servitude was also commonplace, with well-to-do households owning domestic servants, some of whom could even achieve considerable power within the imperial household. While social mobility was supported by a pervasive belief in advancement through civil service examinations, downward mobility was a more general phenomenon. Kinship ties remained significant, but new forms of social organization, such as share partnerships, emerged to meet the needs of a more mobile population, facilitating large-scale business operations.

The continuity of economic dynamism and social stratification from Ming to Qing demonstrates that the fundamental economic and social structures of late imperial China possessed a remarkable resilience that transcended dynastic changes. The underlying drivers of economic activity—a large agrarian base, expanding commercial networks, and increasing monetization—were deeply embedded and largely independent of the specific ruling house. The state's role was primarily regulatory and revenue-seeking, rather than fundamentally restructuring the market economy, which flourished organically. Similarly, social hierarchies and traditional practices, such as hereditary occupations and various forms of servitude, were deeply ingrained cultural and economic norms that provided societal stability. While the ruling elite changed, the broader social order remained largely intact, reflecting a profound social inertia. This suggests that traditional dynastic cycles primarily involved a change in the political leadership and its associated cycles of corruption and renewal, rather than a radical re-engineering of the entire societal and economic fabric. Although the Ming-Qing transition was a "prolonged catastrophe" for the general populace living through it , this referred more to the human cost of conquest and the shift in ruling ethnicity, rather than a fundamental systemic overhaul of the societal and economic foundations.

Cultural Adaptation and Legacy

The Qing rulers engaged in a sophisticated process of cultural adaptation, adopting numerous Chinese customs and traditions while meticulously preserving their distinct Manchu heritage. This approach fostered a complex, multifaceted identity for the dynasty. A key aspect of their governance strategy was the active promotion of Confucianism, which served to legitimize their rule and maintain social order among the Han majority. Confucian classics were integrated into the imperial examination system, reinforcing traditional values and fostering a sense of continuity with China's long history.

The Qing dynasty's legacy extends to laying the foundation for the modern Chinese state as a geographic and ethnic entity. It significantly expanded China's territorial reach, more than doubling the geographical extent of the Ming dynasty and tripling its population to approximately half a billion people by its final years. Crucially, the Qing consciously transformed the understanding of "China" from an earlier (Ming) idea of an ethnic Han Chinese state to a "self-consciously multi-ethnic state".

This cultural policy of syncretism was a calculated strategy for imperial consolidation. Confucianism provided a ready-made, deeply respected framework for social order and political legitimacy among the Han majority. By embracing and promoting it, the Qing could govern more effectively, reduce resistance, and integrate themselves into the established cultural narrative of China. Simultaneously, maintaining a distinct Manchu identity was vital for the ruling elite's internal cohesion, preventing complete "sinicization" and preserving their power base. This cultural approach allowed the Qing to expand the very concept of "China" from a predominantly ethnic Han entity to a vast, multi-ethnic empire, thereby laying a crucial territorial and demographic foundation for the modern Chinese state. This was an expansion and adaptation of existing cultural paradigms, not a revolutionary rejection. While some modern Han nationalist interpretations view the Qing as a "regression and mutation of Chinese civilization" marked by "dark cruelty" , this perspective tends to overlook the profound continuities in governance, economy, and societal structure, and the strategic cultural integration that characterized the Ming-Qing transition.

Table 1: Characteristics of the Traditional Dynastic Cycle (Ming-Qing Transition as Example)

Feature	Description in Imperial Dynastic Cycle	Ming-Qing Example
Legitimacy	Mandate of Heaven, cyclical rise and fall based on moral governance.	Qing claimed Mandate of Heaven, adopted Confucianism to legitimize rule over Han Chinese.
Political System	Centralized imperial bureaucracy, often with a "Three Departments and Six Ministries" system.	Qing largely adopted Ming bureaucratic structures (civil, military, surveillance) and recruited officials via imperial examinations.
Legal System	Comprehensive legal codes, often based on previous dynasties' laws.	Great Qing Code practically duplicated the Great Ming Code, with minimal changes.
Economic Structure	Agrarian base with developing commercialization, markets, and monetization.	Economic growth and commercialization from late Ming continued under Qing, with proliferation of markets and merchant hierarchies.
Social Structure	Highly stratified, hereditary status groups, emphasis on kinship, some social mobility (e.g., exams).	Society remained highly stratified; hereditary professions and servitude persisted. Civil service exams offered mobility, but downward mobility was common.
Cultural Stance	Preservation and promotion of traditional Chinese culture, especially Confucianism.	Qing adopted Chinese customs, actively promoted Confucianism, and integrated it into the examination system.
Nature of Change	Change in ruling family/ethnicity; underlying imperial system, economy, and society largely persist.	A change of ruling house (Manchu over Han) but fundamental administrative, legal, economic, and social systems remained largely intact.

The Revolutionary Rupture: From ROC to PRC

In stark contrast to the path-dependent nature of imperial dynastic transitions, the shift from the Republic of China (ROC) to the People's Republic of China (PRC) in 1949 represented a fundamental rupture in Chinese history. This was not merely a change in ruling family or even a shift in ethnic leadership, but a radical redefinition of the state's purpose, the societal structure, and the very trajectory of historical development, driven by profoundly different ideological foundations.

Ideological Foundations: Liberalism vs. Marxism-Leninism

The Republic of China, established in 1912 after the collapse of the Qing dynasty, was fundamentally influenced by Western political thought. Chinese intellectuals committed to principles of "Mr. Science and Mr. Democracy" as pillars for national prosperity and modernity. Liberalism and republicanism, with their emphasis on individualism, constitutionalism, and the separation of powers, formed the basis of the ROC's formation. Sun Yat-sen's guiding ideology for the Kuomintang (KMT), the "Three Principles of the People" (Nationalism, Democracy, and People's Livelihood), aimed for a free and democratic republic, incorporating elements of socialism and anti-imperialism. While the KMT under Chiang Kai-shek later evolved into an authoritarian one-party state, its rhetoric still centered on republican and nationalist ideals, albeit with a "political tutelage" approach to democracy.

The Chinese Communist Party (CCP), which ultimately triumphed over the KMT, was founded on a radically different ideological bedrock: Marxism-Leninism. This ideology, adapted by Mao Zedong to China's agrarian context as "Mao Zedong Thought," emphasized class struggle and a peasant-dominated revolution. Unlike the KMT's reformist or republican goals, the CCP's vision was a "spiritual utopia" of a future socialist and communist society, explicitly rejecting "feudalism" and "capitalism" as stages to be overcome. The CCP's "Triple Revolution Theory" further encapsulates its mission as a continuous, multi-dimensional revolution: a "revolutionary conquest of power" (overthrowing the old regime), a "reform revolution" (continuous self-improvement of the socialist system), and a "transitional revolution" (progressing towards communism). This teleological, transformative ideology stands in stark contrast to the cyclical view of history prevalent in imperial China and the liberal-republican aspirations of the ROC. The shift was not merely a change in governance but a complete ideological paradigm shift, fundamentally redefining the state's purpose, societal structure, and historical trajectory.

Political System Transformation

The political system established by the PRC in 1949 marked a radical departure from both the imperial system and the KMT's republican aspirations. The PRC is a Leninist "party-state," where the Chinese Communist Party (CCP) is the dominant political institution, exercising "overall leadership over all areas of endeavor in every part of the country". Unlike the separation of powers envisioned by republicanism or the more diffuse authority of imperial bureaucracy, the CCP maintains complete state power through its control of the National People's Congress (NPC), the highest organ of state power. Party rank takes precedence over government rank at every level, and the Party's apex institutions, such as the Central Committee, Politburo, and Politburo Standing Committee, make top decisions, which the government then implements.

This system is explicitly authoritarian, with no freely elected national leaders, suppression of political opposition, and curtailment of civil rights. The CCP controls candidate nominations for local elections and maintains tight control over all state organs, from the Supreme People's Court to the State Council. This centralized, party-controlled system, based on "people's democratic dictatorship" and "socialist consultative democracy" , stands in fundamental opposition to the KMT's vision of a constitutional parliamentary democracy, even if that vision was imperfectly realized. The Party's pervasive control over personnel selection and policy implementation ensures that no autonomous organizations can challenge its rule.This represents a complete break from any previous Chinese political model, establishing a new form of state control unparalleled in its scope and ideological underpinning.

Economic System Transformation

The economic changes implemented by the PRC after 1949 were equally revolutionary, fundamentally altering China's economic landscape. The CCP's main goals were industrialization, improving living standards, reducing income disparities, and producing modern military equipment, all within a socialist framework. This contrasted sharply with the Ming-Qing period's agrarian-based, commercializing economy and the KMT's mixed economy approach, which still allowed for significant private enterprise.

Immediately after 1949, the PRC undertook radical land reform. This involved communist work teams collaborating with local sympathizers to identify landowners, often violently transforming the agricultural system of ownership. Landlords were denounced, their titles seized, and many were beaten or killed.Approximately 45% of arable land was redistributed from landlords to farm families, dismantling the power of the old rural elites. This was followed by the collectivization of agriculture, moving from "mutual aid teams" to "agricultural producers' cooperatives" and eventually to large-scale People's Communes, a direct attempt to unleash productive capacity and achieve economies of scale.

Concurrently, the CCP nationalized key industries and established state-owned enterprises (SOEs), aiming to demonetize and de-commodify the economy through top-down policy interventions. By 1956, nearly all large-scale commerce and industry were nationalized, and urban private business ownership largely ended. While China later adopted a "socialist market economy" under Deng Xiaoping, this was framed as a Marxist-Leninist tool to modernize productive forces and build socialism, with the state retaining majority control and leadership over key sectors. This fundamental shift from a predominantly market-oriented, agrarian economy to a centrally planned, state-controlled system represents a complete break from the economic path dependency observed in imperial transitions.

Social and Cultural Re-engineering

The PRC's ambition extended beyond political and economic restructuring to a radical re-engineering of Chinese society and culture, a stark departure from the cultural preservation and adaptation seen in previous dynastic changes. The CCP actively sought to dismantle traditional Confucian culture, which had underpinned Chinese society for millennia and was even promoted by the Qing for social order.

Beyond land reform, which fundamentally altered rural power structures, the new marriage law was introduced to abolish arranged marriages, allowing individuals to freely choose partners and legalizing divorce for both men and women. Redistributed land was given to both men and women, empowering women in an unprecedented manner and challenging traditional gendered spaces and Confucian ideals that had re-emerged in earlier transitions (e.g., Tang to Song).

The Great Proletarian Cultural Revolution (1966-1976), launched by Mao Zedong, epitomized this drive for social transformation. It aimed to "renew the spirit of the Chinese Revolution" and rectify the Chinese Communist Party by attacking "all traditional values and 'bourgeois' things". This period saw mass organizations criticizing the party, targeting "reactionaries" leading towards capitalism, and leading to widespread social upheaval, physical abuse of intellectuals and elderly people, and the disruption of the urban economy. This deliberate and often violent assault on traditional societal norms, intellectual elites, and cultural heritage stands in stark contrast to the Qing's strategic adoption and integration of Confucianism and existing social structures. The PRC's goal was not merely to replace a dynasty but to create a fundamentally new socialist person and society, free from what it perceived as "feudal" and "bourgeois" influences.

Table 2: Characteristics of the Revolutionary Rupture (ROC-PRC Transition)

Feature	Description in Revolutionary Transition	ROC-PRC Example
Legitimacy	Ideological revolution (Marxism-Leninism), rejection of old order, establishment of new social system.	CCP legitimized by Marxist-Leninist ideology and "revolutionary conquest of power" to establish a socialist state.
Political System	Leninist "party-state," CCP holds absolute power, no separation of powers, suppression of dissent.	PRC established a unitary communist state with CCP exercising "overall leadership" over all state organs; authoritarian control.
Legal System	Laws reflect new ideological principles, serving the party-state's goals.	Legal system transformed to serve the party-state, unlike the wholesale adoption seen in imperial transitions.
Economic Structure	Shift from market/agrarian to centrally planned, state-controlled economy; later "socialist market economy" under party control.	PRC implemented violent land reform, nationalized industries, and established a planned economy, fundamentally altering ownership and production.
Social Structure	Active re-engineering of society, dismantling traditional hierarchies, promoting new social relations.	Land reform dismantled rural elites; new marriage law empowered women; Cultural Revolution attacked traditional values and social norms.
Cultural Stance	Rejection and active dismantling of traditional culture, promotion of new revolutionary culture.	CCP actively sought to transform traditional Confucian culture, leading to movements like the Cultural Revolution.
Nature of Change	Fundamental systemic overhaul across all dimensions (political, economic, social, cultural, ideological).	A complete break from imperial tradition and KMT's republicanism, aiming for a new socialist society.

Speculating on the Divergence: Why the Big Change?

The profound divergence between the Ming-Qing transition's path dependency and the ROC-PRC's revolutionary rupture can be attributed to a confluence of internal dynamics and, critically, unprecedented external pressures that introduced fundamentally new ideological paradigms.

The Impact of External Pressures and New Ideologies

Traditional dynastic cycles, while often brutal, occurred within a largely self-contained Sinocentric world order. External forces, such as nomadic invasions, typically sought to conquer and then integrate into the existing Chinese imperial system, often adopting its administrative and cultural frameworks, as exemplified by the Manchu Qing. The goal was to become the 

new emperor, not to dismantle the imperial system itself.

The 19th and early 20th centuries, however, witnessed a qualitatively different form of external pressure: Western imperialism. China was forcefully opened through the Opium Wars and "unequal treaties," leading to territorial concessions, loss of tariff autonomy, and extraterritoriality, severely impacting China's sovereignty and undermining the legitimacy of the Qing dynasty. This era exposed China's technological and institutional weakness, prompting Chinese intellectuals to seek new models for national salvation and modernization.

This period saw the introduction of Western political thought, including liberalism and republicanism, which directly inspired the formation of the ROC. More significantly, it also introduced Marxism-Leninism, an ideology that offered a comprehensive critique of existing social structures (feudalism, capitalism) and a teleological vision of historical progression towards a classless society. Unlike Confucianism, which supported a cyclical view of history and a hierarchical social order, Marxism-Leninism provided a revolutionary blueprint for total societal transformation, demanding the overthrow of old classes and the establishment of a fundamentally new political and economic system. This was not merely a change in governance but a demand for a complete re-engineering of society from the ground up.

The global Cold War further intensified this ideological struggle. The Chinese Civil War became intertwined with the broader Cold War confrontation, with the United States supporting the KMT and the Soviet Union backing the CCP. This international context provided the CCP with crucial external support and a powerful ideological framework to justify its revolutionary goals, solidifying its anti-Western stance and its commitment to an alternative modernity that transcended capitalist models.

The Nature of Internal Crisis and Response

While traditional dynastic declines were characterized by internal corruption, famine, and peasant rebellions, the ultimate aim of these rebellions was typically to replace the corrupt ruling house with a new one, thereby restoring the Mandate of Heaven within the existing imperial framework. The crisis that led to the ROC's establishment and the subsequent civil war was far more profound. It was a crisis of the 

system itself, the imperial order, which had proven incapable of responding to the existential threats posed by Western imperialism and internal decay.

The KMT, while revolutionary in its republican aims, sought to modernize China through a blend of nationalism, democracy, and social welfare, largely within a framework that preserved elements of existing social and economic structures, particularly private property and a market economy, albeit with state intervention. They did not aim for a total class-based societal re-engineering.

In contrast, the CCP, armed with Marxism-Leninism, viewed the crisis as a fundamental class struggle. Their victory was not merely a change of rulers but a "revolutionary conquest of power"  aimed at dismantling the "old regime" entirely. This ideological imperative drove radical policies like violent land reform, nationalization of industries, and the Cultural Revolution, all designed to eradicate "feudal" and "bourgeois" elements and forge a new socialist society. The CCP's commitment to a continuous "Triple Revolution" meant that change was not a restoration of a cycle but an ongoing, transformative process towards a predetermined communist future.

Table 3: Comparative Analysis of Dynastic Transitions

Feature	Ming-Qing Transition (Path Dependent)	ROC-PRC Transition (Revolutionary Rupture)
Primary Driver of Change	Internal corruption, natural disasters, peasant rebellions leading to loss of Mandate of Heaven.	Systemic crisis of imperial order, exacerbated by Western imperialism and introduction of new, transformative ideologies.
Ideological Basis	Confucianism, Mandate of Heaven; cyclical view of history.	KMT: Western liberalism/republicanism, Three Principles of the People. CCP: Marxism-Leninism, Mao Zedong Thought; teleological, revolutionary view of history.
Political Outcome	Change in ruling family/ethnicity; underlying imperial bureaucratic system largely preserved and adapted.	Abolition of imperial system; KMT's attempt at a republic; CCP's establishment of a Leninist "party-state" with absolute party control.
Economic Outcome	Continuity of agrarian-commercial economy; market structures persist and develop.	Radical land reform, nationalization of industries, shift to centrally planned economy (later "socialist market economy" under party control).
Social Outcome	Social stratification, hereditary structures largely persist; cultural adaptation.	Violent dismantling of traditional social hierarchies (landlords); radical redefinition of gender roles; active suppression of traditional culture.
Cultural Stance	Strategic cultural syncretism (Qing adopted Confucianism to legitimize).	KMT: preservation/promotion of traditional culture. CCP: active rejection and re-engineering of traditional culture (e.g., Cultural Revolution).
External Influence	Conquerors (e.g., Manchus) largely adopted existing Chinese systems.	Western imperialism introduced new, disruptive ideologies (liberalism, Marxism); Cold War provided global ideological battleground.
Nature of Power Transfer	Military conquest/usurpation leading to replacement of ruling house within existing imperial framework.	Revolutionary conquest aimed at total societal transformation, not just a change of rulers.

Conclusion

The analysis of Chinese historical transitions reveals a stark contrast between the path-dependent nature of traditional dynastic changes, exemplified by the Ming-Qing transition, and the revolutionary rupture represented by the shift from the Republic of China to the People's Republic of China. Imperial transitions, while often violent and costly, tended to preserve the fundamental political, economic, and social structures, with new dynasties strategically adopting and adapting existing institutions and cultural norms for pragmatic governance and legitimization. The Qing's successful integration of Ming administrative systems, legal codes, and Confucian values, alongside the persistence of a dynamic commercial economy and stratified society, underscores this deep-seated continuity.

In contrast, the ROC-PRC transition was a profound systemic overhaul driven by the introduction of radically new, transformative ideologies—Western liberalism and republicanism for the ROC, and crucially, Marxism-Leninism for the CCP. These ideologies, particularly the CCP's revolutionary vision, fundamentally challenged the cyclical view of history and demanded a complete re-engineering of the state, economy, and society. The establishment of a Leninist party-state, the implementation of sweeping land reforms and nationalization, and the deliberate dismantling of traditional cultural and social structures marked an unprecedented break from China's historical trajectory. This rupture was not merely a change of rulers but a fundamental redefinition of China's identity and its path forward, shaped by a unique blend of internal crisis and external ideological pressures that had no parallel in earlier dynastic cycles.