The sequence of Western Zhou kings given by the Han historian
Sima Qian is matched (except for a few minor character variants) by the list inscribed on the excavated Lai
pan. Inscriptions and received texts hint at some irregularities in the succession, but these had apparently been smoothed out in the official narrative by the time of the Lai
pan. Most scholars divide the Western Zhou into early, middle and late periods, which also correspond roughly to stylistic changes in bronze vessels. Sima Qian felt unable to extend his chronological table beyond 841 BC, the first year of the
Gonghe Regency, and there is still no accepted chronology of Chinese history before that point. The
Cambridge History of Ancient China used dates determined by
Edward L. Shaughnessy from the "current text"
Bamboo Annals and bronze inscriptions. In 2000, the
Xia–Shang–Zhou Chronology Project produced a schedule of dates based on received texts, bronze inscriptions, radiocarbon dating and astronomical events. However, several bronze inscriptions discovered since then are inconsistent with the project's dates.
Conquest of the Shang The conquest is reflected in the material record by the sudden appearance throughout the Wei River basin of burials in the Shang style and sophisticated bronze vessels of all the types produced by the Shang, from whom the Zhou had evidently acquired skilled craftsmen, scribes and abundant resources. They also expanded the Late Shang practice of inscribing bronze vessels to create lengthy texts recording the accomplishments of their owners and honours bestowed on them by the king. The inscriptions also show that the Zhou had adopted Shang ancestor rituals. This adoption of Shang practices suggests an effort to legitimate Zhou rule. However, the Zhou did not adopt human sacrifice, which was so extensive in the Late Shang, or even mention it in any of their texts. The
Shi Qiang pan, part of a family cache found in western Shaanxi, was cast in the reign of King Gong by the latest in a family of scribes descended from a scribe brought to Shaanxi after the conquest. The lengthy inscription, summarizing the history of the Zhou and that of the Wei () family, begins: Accordant with antiquity was King Wen! (He) first brought harmony to government. The Lord on High sent down fine virtue and great security. Extending to the high and low, he joined the ten thousand states. Capturing and controlling was King Wu! (He) proceeded and campaigned through the four quarters, piercing Yin [= Shang] and governing its people. Eternally unfearful of the Di (Distant Ones), oh, he attacked the Yi minions. , cast shortly after the conquest, bears an inscription describing the event. Longer accounts are found in later sources. Both the
Historical Records and the
Bamboo Annals describe campaigns by
King Wen in southern Shanxi. They state that King Wen moved the Zhou capital from Qiyi to
Feng, and his son,
King Wu, made a further move to Hao across the Feng River. King Wu is said to have expanded his father's campaigns to the Shang, defeating them in the decisive
Battle of Muye, which is also described in the "Great brightness" song of the
Classic of Poetry. The 33-character inscription on the
Li gui gives a brief contemporaneous account of the conquest, confirming the
sexagenary date given by received sources: When King Wu rectified [= conquered] Shang, it was
jiazi (day 1) morning. ... On
xinwei (day 8), the king was at Jian encampment and gave officer Li metal, used to cast for my honoured ancestor Zhan this precious ritual vessel. According to the
Yi Zhou Shu, the Zhou army spent two months in the area mopping up resistance before returning to the Wei valley. The received texts relate that King Wen left two or three of his brothers (depending on the source) to oversee the former Shang domains, nominally ruled by
Wu Geng, the son of the last Shang king.
Civil war and expansion King Wu died two or three years after the conquest, triggering a crisis of the young state. According to the traditional histories, one of King Wu's brothers, the
Duke of Zhou declared himself regent for King Wu's son, the future
King Cheng. Later Confucian scholars, who glorified the Duke of Zhou, described the young king as a babe in his mother's arms, but other evidence indicates that he was a young man at the time. Some authors suggest that the Duke appointed himself king, and in the "Announcement to Kang" chapter of the
Book of Documents he seems to speak as a king. Wu Geng then rebelled against the new regime. The
Shiji says that the brothers of King Wu tasked with supervising him conspired in the rebellion, but the
Xinian in the
Tsinghua Bamboo Slips says they were its first victims. The Duke of Zhou and his half-brother, the
Duke of Shao, organized another eastern campaign. After three years they had regained the lost areas and expanded their domain over an area stretching into Shandong. The victorious triumvirate of the Duke of Zhou, Duke of Shao and King Cheng then consolidated their control over this expanded territory. They built an eastern capital at Chengzhou (modern day
Luoyang) and began founding colonies or states at strategic points in their domain. The most important were placed under members of the ruling family. These colonies are listed in the
Zuozhuan, and some have been confirmed by archaeological finds. The inscription on the Mai
zun narrates the ceremony in which King Cheng appointed a son of the Duke of Zhou to rule
Xing. Kings Cheng and
Kang mounted numerous military campaigns to expand their domains. The Xiao Yu
ding relates a victory over the Guifang, presumably in the Ordos region, late in the reign of King Kang. This phase of expansion came to an end in a disastrous southern campaign in the
Han River region, in which
King Zhao lost his armies and his own life.
Middle period During the reign of
King Mu, the Zhou state shifted to the defensive, particularly in the east. The
Bamboo Annals records a campaign against the
Xu Rong, who had to be driven back from the eastern capital. The inscription on the Dong
gui celebrates a defeat inflicted by the Zhou on the
Dongyi near Ying, a colony set up by one of King Cheng's brothers to guard the southern approaches to the capital. With the passing of generations, the family relationships between the king and the rulers of the colonies had also become more distant. Instead, the Zhou state developed a bureaucracy and formalized relations between the elites. There were reforms of the military, official titles and the distribution of land. A drastic shift in the style and types of bronze ritual vessels, formerly based on Late Shang models, also suggests a change in ritual practice at this time. Very little historical information is available for the reigns of the next four kings, Gong, Yih, Xiao and Yi. Western Zhou kings were customarily succeeded by their oldest sons, but Sima Qian states, without explanation, that King Yih was succeeded by his uncle, who became King Xiao, and that on Xiao's death "the many lords restored" King Yih's son, King Yi. Bronze inscriptions of the time use two different royal calendars, and the
Bamboo Annals mentions King Yih moving out of the capital. Some authors suggest that King Yih was forced out by his uncle, and the two were rivals for a time, but whatever happened is now obscure. The succession was already presented as a linear sequence of kings in the Lai
pan, cast in the reign of King Yi's grandson. Both Sima Qian and the
Bamboo Annals state that King Yi boiled the Duke of
Qi (in eastern Shandong) in a cauldron. A bronze inscription confirms a Zhou attack on Qi at this time. This incident, in a state originally founded by one of King Wu's generals, indicates the waning authority of the Zhou king. Soon afterwards, the Zhou were attacked by
Chu, who reached as far as the
Luo River before being driven off in a counterattack described in the Yu
ding and Yu
gui.
Late period King Li embarked on defensive campaigns in the east and northwest. The received texts all present him in a negative light, and record that he was driven out of the capital into exile in the
Fen River valley. Sources disagree on whether this was a revolt of the peasantry or the nobility, but agree that the king's infant son was barely saved from a mob. The
Bamboo Annals, confirmed by bronze inscriptions, relate that control of the state passed to Lord He, instituting the
Gonghe Regency. Sima Qian's belief that it was a co-regency was based on a misinterpretation of the name. When King Li died in exile, his son became
King Xuan. Both received texts and bronze inscriptions suggest that King Xuan acted quickly to secure the state. In his 5th year, he ordered a campaign against the
Xianyun in the west, and then appointed the successful general to command the eastern territories. According to the
Bamboo Annals, in the following year he ordered a campaign against the Huaiyi in the southeast. Bronze inscriptions record victories in this campaign and others against the Xianyun. He reinforced the south by relocating settlements from the Wei valley to the Nanyang basin and sought to improve relations with distant Zhou states in the northeast and east. At the same time, the king also had to contend with succession struggles in some of the old Zhou states. According to received texts,
King You's reign began with ominous portents. The texts, as well as some of the Minor Court Songs, hint at factional struggles within the Zhou court. In his 11th year, the
Quanrong attacked from the west, killing the king and causing the Zhou elite to flee from the Wei valley to the eastern capital, bringing the Western Zhou era to a close. Although Zhou royal power had been declining for over a century, this dramatic event presents a convenient milestone for historians. The Zhou would continue to occupy the eastern capital for another five centuries, but their sway over the states they had established became increasingly nominal. == Society ==