English: A road sign on Yunnan Hwy 214 north of the appropriately named Potou Township, Jianshui County. (Potou means "head of the slope"). "600 m ahead, a 38-km continuous descent starts. Check your brakes, and add brake liquid!" . Over these 38 km, the road will drop some 1,500 m (from ca. 1,800 m elevation here to ca. 300 m elevation near the Red River)