A further change began in the 5th century bce, when the states of Wu and Yue far to the south suddenly challenged Chu for hegemony over the southern part of China, at a time when the strong state of Jin was much weakened by an internecine struggle among powerful magnates. Wu got so far as to claim overlordship over northern China in an interstate meeting held in 482 bce after defeating Chu. But Wu’s hegemony was short-lived; it collapsed after being attacked by Yue. Yue held the nominal overlordship for only a brief period; Jin, Qin, and Qi were weakened by internal disturbances (Jin split into three contending powers) and declined; and a series of defeats paralyzed Chu. Thus, the balance-of-power system was rendered unworkable.
A half century of disorder followed. Small states fell prey to big ones, while in the big states usurpers replaced the old rulers. When the chaos ended, there were seven major powers and half a dozen minor ones. Among the seven major powers, Zhao, Han, and Wei had formerly been parts of Jin; the Qi ruling house had changed hands; and Qin was undergoing succession problems. The only “old” state was Chu. Even Chu, a southern state, had become almost completely assimilated to the northern culture (except in art, literature, and folklore). The minor powers had also changed: some had retained only small portions of their old territories, some had new ruling houses, and some were new states that had emerged from non-Chinese tribes. The long interval of power struggle that followed (475–221 bce) is known as the Zhanguo (Warring States) period.
Social, political, and cultural changes
The years from the 8th century bce to 221 bce witnessed the painful birth of a unified China. It was a period of bloody wars and also of far-reaching changes in politics, society, and intellectual outlook.
The decline of feudalism
The most obvious change in political institutions was that the old feudal structure was replaced by systems of incipient bureaucracy under monarchy. The decline of feudalism took its course in the Chunqiu period, and the rise of the new order may be seen in the Zhanguo period. The Zhou feudalism suffered from a continual dilution of authority. As a state expanded, its nobility acquired vassals, and these in turn acquired their own vassals. The longer this went on, the more diluted the family tie became and the more dependent the ruler became on the combined strength of the vassals. At a certain point, the vassals might acquire an advantageous position, and the most dominant figures among them might eclipse the king. The Zhou royal house perhaps reached the turning point earlier than the other feudal states. As a result, the Zhou royal domain and its influence shrank when Pingwang moved his court to the east. The ruling houses of other states suffered the same fate. Within a century after the Zhou court had moved to the east, the ruling houses in most of the feudal states had changed. In some cases a dominating branch replaced the major lineage, and in others a powerful minister formed a strong vassaldom and usurped the authority of the legitimate ruler. Bloody court intrigues and power struggles eliminated many established houses. The new power centres were reluctant to see the process continue and therefore refused to allow further segmentation and subinfeudation. Thus, the feudal system withered and finally collapsed.
Urbanization and assimilation
Simultaneous with the demise of feudalism was a rise in urbanization. Minor fortified cities were built, radiating out from each of the major centres, and other towns radiated from the minor cities. From these cities and towns orders were issued, and to them the resources of the countryside were sent. The central plain along the Huang He was the first to be saturated by clusters of cities. This is probably the reason why the central states soon reached the maximum of their influence in the interstate power struggle: unlike the states in peripheral areas, they had no room to expand.
The period of urbanization was also a time of assimilation. The non-Zhou population caught in the reach of feudal cities could not but feel the magnetic attraction of the civilization represented by the Zhou people and Zhou feudalism. The bronze inscriptions of the Xi Zhou period (1046–771 bce) refer to the disturbances of the barbarians, who could be found practically everywhere. They were the non-Zhou groups scattered in the open spaces. The barbarians in inland China were forced to integrate with one or another of the contenders in the interstate conflicts. Their lands were annexed, and their populations were moved or absorbed. The strength of the large states owed much to their success at incorporating these non-Chinese groups. By the time of the unification of China in the 3rd century bce, there was virtually no significant concentration of non-Chinese groups north of the Yangtze River valley and south of the steppe. Bronze pieces attributable to non-Zhou chiefs in the late Chunqiu period show no significant difference in writing system and style from those of the Chinese states.
Zhou civilization was not assimilated so easily in the south, where the markedly different Chu culture flourished. For some centuries, Chu was the archenemy of the Chinese states, yet the nobles of the Chu acquired enough of the northern culture to enable their envoy to the courts of the north to cite the same verses and observe the same manners. The Chu literature that has survived is the fruit of these two distinctive heritages.
To the north were the nomadic peoples of the steppe. As long as they remained divided, they constituted no threat; however, when they were under strong leaders, able to forge a united nomadic empire challenging the dominance of the Chinese, there were confrontations. The “punitive” action into the north during the reign of Xuanwang (827–782 bce) does not seem to have been very large in scope; both sides apparently had little ambition for territorial aggrandizement. Cultural exchange in the northern frontier region was far less than the assimilation that occurred in the south along the Yangtze valley, and it was mainly concerned with techniques of cavalry warfare.
The rise of monarchy
Internal political changes also took place as states grew in population and area. The most basic of these was in the pattern of power delegation. Under feudalism, authority had been delegated by the lord to the vassal. The new state rulers sought ways of maintaining and organizing their power.
In the state of Jin the influence of kinsmen of the ruling house had been trimmed even before Wengong established his overlordship. Wengong reorganized the government, installing his most capable followers in the key posts. He set up a hierarchical structure that corresponded to the channels of military command. Appointments to these key positions came to be based on a combination of merit and seniority, thus establishing a type of bureaucracy that was to become traditional in Chinese government.
The Chu government was perhaps the oldest true monarchy among all the Chunqiu states. The authority of the king was absolute. Chu was the only major state in which the ruling house survived the chaotic years of the Zhanguo period.
Local administration went through a slow evolution. The prefecture system developed in both Jin and Chu was one innovation. In Jin there were several dozen prefects across the state, each having limited authority and tenure. The Jin prefect was no more than a functionary, in contrast to the feudal practice. Similar local administrative units grew up in Chu. New lands taken by conquest were organized into prefectures governed by ranking officials who were evidently appointed by the king. The prefecture system of Jin and Chu was to become the principal form of local administration in the Zhanguo period.
By that time, practically all the major states had chancellors, who acted as leaders of the courts, which were composed of numerous officials. Whereas in the feudal state the officials had been military officers, the more functionally differentiated court of the Zhanguo period usually had a separate corps of civil service personnel. Local administration was entrusted to prefects, who served limited terms. Prefects were often required to submit annual reports to the court so that the ruler could judge their performance. Regional supervisors were sometimes dispatched to check the work of the prefects, a system developed by the later Chinese imperial government into the “censor” system. Fiefs of substantial size were given to only a few people, usually close relatives of the ruler. There was little opportunity for anyone to challenge the sovereignty of the state. The majority of government employees were not relatives of the ruler, and some of them might not even have been citizens of the state. Officials were paid in grain or perhaps in a combination of cash and grain. Archives were kept by scribes on wooden blocks and bamboo strips. These features combined indicate the emergence of some form of bureaucracy.