héng 衡

Migration and Distribution Yanmen Commandery: It was established by King Wuling of Zhao during the Warring States period and continued in the Qin and Han dynasties. It is equivalent to the area around Dai County, Shanxi Province today. Runan Commandery: It was established by Emperor Gaozu of the Han Dynasty, with its administrative center in Shangcai (south of present - day Shangcai County, Henan Province). It is equivalent to the area in the south - central part of Henan Province and the area north of the Huaihe River in Anhui Province today.