The Thai people in Vietnam have a common origin with the Thai groups of southern China, Laos, Thailand and Burma.
Their ancestors are from the Bach Viet group living in southern China and northeast Vietnam.
During the first years before Christ, under the oppression of the Han people, the majority people of today’s China, part of the Thai people migrated south.
Then, their origin Mai Chau is clarified following the discovery of a book of annals in the village of Mai Ha of the valley of Mai Chau. It is the genealogical book of the Ha Cong family that dates the arrival in Mai Chau at the end of the 13th century.
Thus, the ancestors of the Thai people in Mai Chau followed the Red River and the Black River to settle in present Mai Chau and other regions around 700 years ago.