There were few Wa in West Mang Lon, where Shans formed the chief population, but there were Palaungs, Chinese and Yanglam, besides Lahu. The bulk of the population in East Mang Lon was Wa, but there were Shans in the valley areas. Both portions were very hilly; the only flat land being along the banks of streams in the valleys, and here the Shans were settled. There were prosperous settlements and bazaars at Nawng Hkam and Mong Kao in West Mang Lon.