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Tang Destruction of Wang Shichong's Zheng State

Type Event Region China Time 620–621

In 620–621 CE, the Tang besieged Luoyang under Li Shimin; after crushing Dou Jiande's Xia army at Hulao Pass, Wang Shichong surrendered and Zheng fel…

Timeline

  1. 620–621Luoyang · HenanLi Shimin led Tang forces east through Tong Pass, gradually squeezing Zheng's territory and laying a prolonged siege on Luoyang held by Wang Shichong, cutting supply lines and outside aid so Zheng's troops were trapped in an isolated city.
  2. 621Hulao Pass · HenanXia king Dou Jiande marched south with a large army to aid Zheng; Li Shimin detached troops to hold Hulao Pass and meet him. The Tang won against the odds, capturing and killing Dou Jiande, and the Xia army collapsed, leaving Zheng without its last outside support.
  3. 621Luoyang · HenanAfter Dou Jiande's defeat and death, morale among Luoyang's garrison collapsed and Wang Shichong led his civil and military officials out to surrender. The Tang abolished Zheng and annexed its territory, bringing the core of the Central Plains into Tang hands.

Sources