Sānchuān

Sanchuan lies northwest of Guyuan in the valleys near the Liupan Mountains. A Song frontier fort was established here in 1030 under the Zhenrong military district, guarding approaches through the mountain country. The Jin later raised the fort to county status, and the county passed to Zhenyuan under the Yuan. In 1270 it was incorporated into that neighbouring administration. Old geographical writings locate the former county in the country of the Greater and Lesser Black Water streams.