Later Yan is defeated by its former vassal Northern Wei at the Battle of Canhe Slope.
The Later Yan (simplified Chinese: 后燕; traditional Chinese: 後燕; pinyin: Hòu Yān; 384 – 407 or 409) was a dynastic state ruled by the Xianbei people, located in modern-day northeast China, during the era of Sixteen Kingdoms in China.All rulers of the Later Yan declared themselves "emperors".