Tibetan muleteers with a pack train leaving the village of Adong on the old tea-horse trail (the Cha Ma Gu Dao), for Deqin. Adong, a Tibetan village in a side valley off the upper Mekong (Lancang), is near the Tibetan border, north of Deqin, Yunnan, China. Adong is on the old tea-horse route, the Cha Ma Gu Dao. Older man in brown: Dun Zhu, 65 years old. Younger man in white: Ta Shi Ci Li, 63 years old.