yuhe promotes the trade market. According to the Baidu map, the specific location is No.1138, Gaolianghe, Huairou District, Beijing. Huairou District is a municipal district of Beijing, located at the southern foot of Yanshan Mountain, in the northeast of Beijing, bordering Miyun District in the east, Shunyi District and Changping District in the south, Yanqing District in the west and Chicheng County, Fengning County and Luanping County in Hebei Province in the north.