The Mã Pí Lèng Pass is a mountain pass in Vietnam. It is at the altitude of 1,500 m (4,921 ft).
The road was first built by minority people - Zao people, H'mong, Tay and "Lolo" (in China called Yi people).
The Khau Vai Love Fair is a traditional market of ethnic people that often happens on 26/3 (Lunar Calendar). This could be one of the most unique fair in Vietnam and in the world since the product sold here is “love”