Dai 傣族分布圖
should be noted that here that the terms "Dai," "Tai," and "Thai," are different versions of the same ethnic name. While "Dai" is used by Chinese writers, "Tai" is favored by many Asian and Western scholars to denote the same ethnic group living outside of China. "Thai" is generally used associated with the majority peoples of Thailand. Within China, the Dai nationality is actually an umbrella term for all of the Tai language groups residing there. The Dai nationality in China includes the Tai Lue, Tai Mao, Hongjin Tai, Tai Nua, Tai Pong, Huayao Tai, Han Tai, Ya, Tai Dam, Tai Kao, Paxi, and Shan (arranged here according to population size, greatest to least). The total population of the Dai nationality in China is over 1.5 million people (A.D. 2000 estimate).
Source: www.infomekong.com/ maps-Dailue-Detailed.htm