Měngbàn
In southern Yunnan, the country around Zhěngdǒng lies among the river basins of the upper Mekong and Lǐxiān. Its Dai villages are known for traditional houses raised on posts. After the Ming conquest of Yunnan in 1382, the region's Mekong and Babian River basins came under the administrations of Cheli and Yuanjiang respectively. Zhengdong itself later formed a hereditary native domain.