Ngưu Hống (original) (raw)

Ngưu Hống (Vietnamese, Hán tự: 牛吼, lit. Cobra) or Tóushé (Chinese: 頭蛇, lit. Cobra) were names for a medieval Black Tai polity that located in northwest Vietnam, mainly around the Black River. Its territory comprises modern-day provinces of Điện Biên, Lai Châu, Sơn La as well as western parts of Lào Cai and Yên Bái.