The Aka are called by the Thai "Ei-Ko" [called by themselves Aka] are the poorest ethnic group in Thailand and are well known to tourists for their extraordinary costumes and exotic appearance. There are approximately 20000 Aka living in Thailand. The Aka originate from Tibet and Yunnan in Chinna. It is generally believed that the Aka originated in the Tibetan Highlands. Htin Taiyai Kamu Over t..