Quảng Ninh Province
According to Vu (2013:12-15), the ancestors of the Pà Thẻn had first migrated from Guangxi to Hải Ninh (now Quảng Ninh Province), and then from Hải Ninh to the Thái Nguyên area. The Pà Thẻn then split off to settle in three main areas.