Sanxingdui Ancient Site is located on the south bank of the Yazi River in the northwest of Guanghan City, Sichuan Province, China. It covers an area of 12 square kilometers and has a history of 3,000 to 5,000 years. Rich cultural heritage. There are the best preserved east, west and south city walls and inner city walls of Moon Bay. Sanxingdui site is known as one of the greatest archaeological discoveries of mankind in the 20th century.