Měngměng
Mengmeng lies in the mountain valleys west of the Lancang River. Its history is bound to the Tai chiefdoms of Gengma and the neighboring basins. Local genealogies tell how rulers developed cultivated land and established new communities in the valleys, while alliances and disputes drew chiefs into each other's affairs. Tea was also grown in the district: the gardens at Bingdao were associated with the chiefs of Mengmeng during the Ming and Qing.