A Red Dao woman from Sapa.
The Dao's population of 500,000 inhabitants live in the country's remote central and northern highlands.
The Dao, who belong to the Mong-Dao language group, comprise eight sub-groups: Dao Do (Red Dao),
Dao Tien (Coin Dao), Dao Quan Chet (Tight Trousers Dao), Dao Lo Gang,
Dao Quan Trang (White Trousers Dao), Dao Thanh Y and Dao Lan Tien.