Prince of Ancheng Xu: Emperor Xuan of Chen and the Rise and Fall of the Southern Dynasties in Zizhi Tongjian

Brief Introduction

Chen Xu (528–582), courtesy name Zilong, was the fourth emperor of the Chen Dynasty during the Southern Dynasties, with the posthumous title Emperor Xuan. Before ascending the throne, he was enfeoffed as the Prince of Ancheng. As the younger brother of Chen Baxian, the founding emperor (Emperor Wu of Chen), Chen Xu played a pivotal role in Chen history. His reign is viewed as a turning point where the dynasty's strength briefly surged before rapidly declining, making him one of the most influential monarchs of the late Southern Dynasties.

Core Knowledge Points

1. Identity and Ascension: Emperor Xuan's succession was not a typical primogeniture case. He assumed power through political maneuvering, succeeding his nephew, Emperor Fei of Chen (Chen Bozong). His status as "Prince of Ancheng" prior to ascension laid the foundation for accumulating military and political power, illustrating a typical path of royal usurpation in the Southern Dynasties.
2. Northern Expedition Achievements: During his reign, Chen Xu exploited internal turmoil in Northern Qi to launch a large-scale northern expedition. He temporarily recovered the Huainan region, expanding the Chen territory to its maximum extent. This period is historically known as the "Reign of Tiankang," marking the last major victory of a southern expedition by the Southern Dynasties.
3. Dilemmas in Later Years: In his later years, losses in wars against the emerging Northern Zhou led to the loss of Huainan again, severely damaging the Chen Dynasty's national strength. After his son Chen Shubao succeeded him, excessive indulgence ultimately led to the destruction of the Chen Dynasty by the Sui Dynasty.

Connection to the Content of Zizhi Tongjian

Zizhi Tongjian details Chen Xu's deeds in volumes 166 to 168. Sima Guang focused on Chen Xu's power transition from "Prince of Ancheng" to emperor, showcasing the complexity of imperial succession in the Southern Dynasties. The book particularly records Chen Xu's gaming against Northern Qi and Northern Zhou. Through the success and failure of Chen Xu's northern expeditions, it reveals the geopolitical dilemma of the Southern Dynasties "settling for peace in Jiangnan."

In his narrative, Sima Guang both affirmed Chen Xu's political acumen and military talent while implicitly expressing regret over the short-lived nature of Southern Dynasties regimes. The book records Chen Xu's admonitions to his crown prince, Chen Shubao, before his death, reflecting his anxiety about the dynasty's future. However, through this figure, Zizhi Tongjian profoundly reflects the historical reality of unstable imperial succession systems and surrounding external enemies in the late Southern Dynasties. Chen Xu's efforts briefly delayed the collapse but failed to change the historical trend, making him a tragic yet significant monarch in Southern Dynasty history.

Conclusion

Prince of Ancheng Xu, namely Emperor Xuan of Chen, embodied the rise and fall of the Chen Dynasty in his life. Through the records in Zizhi Tongjian, we can not only understand his personal merits and faults but also gain insight into the evolution of the political and military landscape at the end of the Northern and Southern Dynasties.