Horse caravan entering Heshun, a 600-year old town near Tengchong in southwest Yunnan, China. (Bringing timber from the town of Yingjing). Close to the Burmese border, Heshun was an important trading town on what was originally the Southern Silk Road, then the Burmese section of the Tea Horse Road (Cha Ma Gu Dao), then in World War II the Burma Road.