Mu Cang Chai is a district of Yen Bai in the northeastern region of Vietnam. The place is home to the H'Mong and Thai community. For the place being about 1000 meters above sea level, the steep hills make it almost impossible to grow rice fields like those in the delta. Thus local residences grow their own rice on the terraced fields, for the purpose of preventing water from flowing downhill. These terraced fields lying among rugged green moutain valleys.