The Ascension of King Dai Liu Heng: The Path to the Throne of Emperor Wen of Han through the Lens of Zizhi Tongjian

Brief Introduction

Liu Heng, King of Dai, is the second emperor of the Western Han Dynasty, Emperor Wen of Han. He was the son of Liu Bang (Emperor Gaozu) and Lady Bo. After the death of Empress Lü and the suppression of the Rebellion of the Lüs, the Liu imperial clan and the group of meritorious officials faced a critical choice in enthroning a new emperor. Liu Heng was welcomed as emperor due to his weak maternal clan influence and his own kind and cautious nature. This event marked the return of the Western Han regime from the dominance of the Lü maternal relatives back to Liu imperial power, initiating the famous "Rule of Wen and Jing".

Core Knowledge Points

1. Historical Background: The Rebellion of the Lüs
During her lifetime, Empress Lü appointed various Lü relatives as kings, controlling military and political power, severely suppressing the Liu imperial clan. After Empress Lü's death, Grand Commandant Zhou Bo and Prime Minister Chen Ping united with the imperial clan to eliminate the Lü forces. However, most of Emperor Gaozu's descendants who met the criteria had already been killed or their status was unclear, leaving the court in urgent need of a legitimate monarch.

2. Selection Logic: Weak Maternal Clan and Kind Personality
The ministers initially considered enthroning the son of King Qi, Liu Fei. However, due to the powerful influence of his maternal clan (the Si Jun family), there was fear of repeating the tragedy of Empress Lü's dominance. Ultimately, King Dai Liu Heng was selected. The key factor was that his mother, Empress Dowager Bo's family, was low-profile and powerless, and Liu Heng was known for his kindness, believed not to threaten the interests of the meritorious officials.

3. Ascension Process: Cautious Verification
Upon first hearing the proposal to ascend the throne, Liu Heng was suspicious and sent envoys to investigate the situation in Chang'an. Only after confirming the sincerity of ministers like Zhou Bo and the absence of any conspiracy did he lead his troops into the capital. After ascending the throne, he treated meritorious officials generously, practiced light burials and reduced corvée labor, thereby solidifying the foundation of his rule.

Connection with Zizhi Tongjian

In the Zizhi Tongjian · Han Ji, Sima Guang provided a detailed record of this event. The narrative focus and historical value are primarily reflected in the following aspects:

* Display of Political Wisdom
Zizhi Tongjian details the dialogues between Zhou Bo, Chen Ping, and the envoys from Dai (such as Song Chang). Sima Guang emphasized Liu Heng's caution and wisdom through his writing style. Liu Heng did not passively accept the offer but actively verified the situation, demonstrating the qualities of a mature politician.

* Warning on Maternal Clan Interference
When narrating the selection process, Sima Guang specifically highlighted the ministers' consideration of "maternal clan power." This reflects a consistent historical viewpoint in Zizhi Tongjian: interference by maternal relatives is a major threat to imperial stability. Liu Heng's successful ascension is viewed as a model case for resolving this historical dilemma.

* Transitional Node
The book places this event after the chaos of Empress Lü's governance, highlighting the importance of Emperor Wen's ascension for restoring the Huang-Lao policy of non-action (wu wei) from the early Han Dynasty. Through this evaluation, Sima Guang affirmed Emperor Wen's historical status as a "wise ruler," providing a reference for future rulers on balancing "benevolent governance" and "political strategy."

Conclusion

The ascension of King Dai Liu Heng was not only a return of imperial power in the Western Han but also a successful peaceful transition of power in ancient Chinese political history. Through this case, Zizhi Tongjian profoundly reveals the balance of power博弈 (game/struggle) among the imperial clan, meritorious officials, and maternal relatives in imperial succession, holding high historical reference value.