The hinterland of the solitary bamboo country is in the confluence area of Luanhe River and qinglong river, that is, the junction of Qian 'an City, lulong county and Luanxian County and the three counties (cities), and the whole territory of the solitary bamboo country is much wider than this. The heyday of the solitary bamboo kingdom was in the Shang Dynasty, which generally included most of Tangshan City in the northeast of Hebei Province, Qinhuangdao City and the western part of Liaoning Province.