Sang Ma Sao is a mountainous village, 50km from the centre of Bat Xat District in Lao Cai Province. There are 644 households, with 3973 people, 100% is ethnic Mongolian living in 11 villages. Sang Ma Sao commune is known with complex terrain, divided by high mountain chains. To go to Sang Ma Sao, you can come from two directions. It is around 70km from Sapa town. From O Quy Ho mountain pass, you can follow the way of Ban Khoang and pass the Ta Giang Phinh valley and continue coming to Muong Hum Gate of heaven. Or you can start from Lao Cai city and follow the way of Trinh Tuong, pass the center of Bat Xat district and come to Lũng Pô, Y Tý.