Yan Emperor
The last Yan Emperor, met the end of his reign in the third of a series of three battles, known as the Battle of Banquan. The exact location of this battle is disputed among modern historians, due to multiple locations adopting the same name at various points through history. Possible candidates include Zhuolu County and Huailai County in Zhangjiakou, Hebei, Yanqing District in Beijing, Fugou County in Zhoukou, Henan, and Yanhu District in Yuncheng, Shanxi.