1) Dan qu(River) 当曲河2) Hequ 河曲 1. A Trial Discussion on Hequ Corrider for Nationalities in Qing-zang Highland; 青藏高原“河曲民族走廊”初探 2. Liuhuzhou was located in Hequ area,a half-agricultural and half-animal husbandry geographical region and a key frontier fort where ...