Tai Pao language

Tai Pao, known in Vietnamese sources as Tai Hang Tong (Hàng Tổng), is a Tai language of Vietnam and Laos. In Laos, it is spoken in Khamkeut District, Pakkading District, and Viengthong District of Bolikhamxai Province. Two dialects of Tai Hang Tong are distinguished: Tai Pao and Tai Yo.

Lai Pao script
The Tai Hang Tong in Mường Khương, Nghệ An Province preserve a unique script called Lai Pao or Lai Paw. Since 2006, the preservation of Lai Pao script was made possible by conservation works of Michel Ferlus.