The word tai or thai means people ( khonh) or people of a certain geographical location but none of an ethnic nor race as Williams Dodd mentioned in tai race book by ignorance and misunderstanding. Tai Dam, tai Deng, tai Done or Khao who become later Phoutai belong to Lao ethnic group, dwelled in the regions of black river, red river and white river in South China. They moved down to Laos and North of Vietnam after Nane Chao or Nongse the kingdom of AiLao was dislocated.