@qamzardaan Tai Yuan, Tai Lue, Tai Khuen (a subgroup of the Shan), Yong
Tai Yuan, Tai Lue, Tai Khuen (a subgroup of the Shan), and Yong are still southeast Asian in my book. it's not the skin color, it's the monolid eyes and jawlines.
Tai-Kadai Thais are the same people as Tai-Kadai Vietnamese just as Filipinos & Malays are the same people.