《水经注·卷十二》
沫水又往北流经小簧岭东面，又东转，流经大簧岭南面。这里大概是霍原隐居教学的地方。
涞水又北径小黉东，又东径大黉南，盖霍原隐居教授处也。
The Moshui River flows north again, east of Xiaohuangling, and east again, south of Dahuangling. This is probably where Huo Yuan lived in seclusion and taught.