Yanggao CountyYanggao County is a county in the northeast of Shanxi province, China, bordering Inner Mongolia to the northwest and Hebei province to the east. It is under the administration of the prefecture-level city of Datong.HistoryYanggao was formerly known as Gaoliu. Under the Qin and Western Han, it was part of Dai Commandery. Under the Eastern [Han dynasty|Eastern Han], it served as the prefectural seat, although lost this status to Daixian during the Three [Kingdoms period].Climate