Ta Chi Nhu mountain is situated in Tram Tau District, in the northern mountainous province of Yen Bai, Vietnam. It is one of top places of mountain climbers and “cloud” hunters. The mountain is also known as Phu Song Sung by the Thai ethnic, or Chung Chua Nha by the Mong people, and is part of the Pu Luong mountain of the Hoang Lien Son range.