Qin Dynasty

The Qin state's rise to unify China in 221 BCE was guided by Legalism, a school of political philosophy that rejected the Confucian premise that a ruler should govern through moral example and ritual propriety, arguing instead for strict, uniformly enforced law, harsh punishment, and a bureaucracy answerable directly to the ruler rather than to any independent class of ritually trained scholars. A Stanford Encyclopedia entry on Legalism in Chinese philosophy traces the school through earlier theorists to its fullest statement under Han Feizi, whose ideas the Qin chancellor Li Si adapted into actual state policy once the Qin conquest was complete.

That policy turned openly against rival philosophical traditions once the empire was unified. Traditional accounts, transmitted through the Han historian Sima Qian, describe an edict ordering the burning of philosophical and historical texts outside an approved technical canon, followed by the execution or burial of a number of scholars accused of criticizing the new regime, episodes later Confucian tradition treated as the defining crime of Qin rule and cited for centuries afterward as the reason a ritually grounded Confucian state, rather than a Legalist one, deserved to govern China. Whatever the precise scale of the burning and the burials, the episode fixed Legalism's reputation in later Chinese memory as the philosophy that ruled by suppressing its rivals rather than persuading them.

Qin Shi Huang's court did not rest its claim to rule on Legalist administrative theory alone; it also adopted the five-phase cosmological system, wuxing, that correlated the five phases of wood, fire, earth, metal and water with colors, directions, seasons and, crucially, with the legitimating power of a ruling dynasty. A study of astrology and cosmology in early China traces how the Qin identified their own rule with the phase of water, associated with the color black and with the direction north, and adjusted court ritual, official dress and even the format of official documents to match that cosmological assignment.

The theory held that dynasties succeeded one another as one phase conquered or gave way to the next, so a dynasty's assigned phase was simultaneously a claim about cosmic order and a prediction about its own eventual succession, a built-in acknowledgment that no dynasty, including the Qin's own, would rule forever. Later dynasties, beginning with the Han that replaced the short lived Qin within two decades, continued to work within this same correlative framework, debating and periodically reassigning their own phase, so that the cosmological vocabulary the Qin had adopted to legitimate its rule outlived the dynasty by many centuries, becoming a standard tool of Chinese imperial legitimation rather than a Qin peculiarity.