Mu Cang Chai is a rural district located in Yen Bai Province, northern Vietnam. It is renowned for its stunning terraced rice fields, which are a UNESCO World Heritage site. The area is home to various ethnic groups, including the H'mong and Thai, who have cultivated these fields for generations. The best time to visit Mu Cang Chai is during the rice harvest season, typically from September to October, when the fields turn golden. The breathtaking landscapes attract photographers and nature lovers, making it a popular destination for eco-tourism and cultural experiences in Vietnam.