The Rebellion of the Seven Kingdoms: A Critical Game of Centralized Power vs. Local Separatism in the Former Han

Brief Introduction

The Rebellion of the Seven Kingdoms is the most famous rebellion by princely kingdoms in the early Former Han dynasty, occurring in the third year of Emperor Jing's reign (154 BCE). At that time, seven princely kingdoms—Wu, Chu, Zhao, Jinan, Zichuan, Jiaodong, and Huainan—led by Liu Bi, the King of Wu, jointly raised troops to attack the imperial capital. This rebellion was the inevitable result of the intensifying contradiction between local power and centralized authority under the "parallel system of commanderies and kingdoms" established in early Han. After three months of fierce fighting, the Han army quickly quelled the rebellion. This not only ended the threat of princely kingdoms to the central government but also laid a solid foundation for Emperor Wu of Han to implement the "Enfeoffment Order" (Tui'en Ling) and thoroughly resolve the issue of vassal states.

Core Knowledge Points

1. Background and Causes of the Rebellion:
* Economic Power of Liu Bi, King of Wu: The region of Wu was wealthy. Liu Bi attracted fugitives from across the land to illegally mint coins and boiled seawater to produce salt, accumulating immense wealth. He also long-term sponsored retainers, forming a military threat.
* Zao Cuo's Strategy of Reducing Vassals: During Emperor Jing's reign, the Imperial Secretary Zao Cuo advocated for seizing the fiefs of the princely kings to directly weaken their influence. Liu Bi of Wu regarded the "reduction of vassals" as a pretext of the court targeting him, so he allied with other princely kings dissatisfied with this policy to rise in rebellion. Under the banner of "clearing the Emperor's side" (eliminating corrupt ministers), they actually sought to establish themselves as independent rulers.

2. The Course and Outcome of the War:
* The rebel forces once advanced to Xingyang (present-day Kaifeng, Henan), cutting off the Han army's supply lines, causing the situation to turn against the court.
* Emperor Jing of Han adopted Zhou Yafu's advice to avoid the rebels' momentum, firmly holding the Kingdom of Liang and cutting off the rebels' retreat and severing their grain and fodder supply.
* The rebel forces suffered from internal disagreements and logistical collapse, ultimately suffering a total defeat within three months. Liu Bi of Wu was defeated and killed, while the remaining six kingdoms were either destroyed or forced to surrender.

3. Historical Impact:
* Central power was greatly strengthened; princely kings no longer possessed independent political or military privileges.
* The governance philosophy of "strengthening the trunk and weakening the branches" was established, providing institutional safeguards for the stability and unification of the middle and late Former Han.

*Relevance to Content in the Book of Han (Hanshu)*

In the Book of Han authored by Ban Gu, the Rebellion of the Seven Kingdoms is a significant narrative thread, primarily found in chapters such as the "Hereditary House of the Kingdoms of Wu, Chu, and the Seven States" and the "Biography of Zao Cuo."

The Hereditary House of the Kingdoms of Wu, Chu, and the Seven States**: This section details how Liu Bi of Wu utilized copper mines and salt profits to enrich the state, as well as the process of his plot to raise troops with Liu Wu, the King of Chu, and others. By contrasting the reactions of various princely kings, the text reveals the internal loose organization and contradictions within the rebellion. It particularly emphasizes the success of Zhou Yafu's strategy of "deep ditches and strong walls," reflecting the Book of Han*'s importance on military strategy.
The Biography of Zao Cuo**: This chapter recounts Zao Cuo's experiences as the main architect of the "reduction of vassals" policy. It cites the process where Emperor Jing, in the early stages of the rebellion, inquired of the Imperial Historian Zhou Yafu on how to respond, and Zao Cuo's tragic ending, where he was executed along with his clan to appease King Wu's resentment. This section reveals the cruelty and complexity of political struggle, as well as the Book of Han*'s profound insight into the fate of individuals and historical causality.
The Annals of Emperor Ping and Notes/Citations: Although separated by a century, the Book of Han* frequently mentions the Rebellion of the Seven Kingdoms in subsequent chapters as a warning, emphasizing the historical trend that the commandery-county system is superior to the enfeoffment system. Ban Gu used this to critique the drawbacks of the early Han enfeoffment policy and advocate for the legitimacy of centralized power.

Through the records in the Book of Han, the Rebellion of the Seven Kingdoms is not only a military conflict but also a critical node in the transformation of the Former Han political system, profoundly influencing later reflections on the relationship between central and local governments.