Tian, Yanmen Commandery (雁門郡, in the Warring States period, Zhao Wuling Wangzhi County, Qin and Han continued this county, the seat of government was in Shanwu, that is, in the south of present-day Youyu County, Shanxi. Later Han Moved County's ZhiyinGuan, which is northwest of present-day Dai County, Shanxi), originated from the Chen clan. During the Spring and Autumn Period, one of the monarchs of the princely state of Chen, Duke Huan of Chen, had a son as a complete, and was a secretary in the state of Qi, with the surname of Chen. Later, when Chen Huan came, he changed his surname to Tian Shi, and by the time of the Tenth Sun Tian He, he changed to the Jiang clan Qi State and the Jiantian Clan Qi State, which is the historical "Tian Clan Dai Qi". During the Han Dynasty, Arita Yannian was a descendant of him.