Changzhu Temple was built in the middle of the seventh century AD and is the earliest Buddhist temple in Tibetan history. It was later expanded to be the summer palace of Songzan Ganbu and Wencheng Princess. The treasure of Changzhusi Town is a Guanyin Bodhisattva sifted by the Queen of Naidong during the late Yuan Dynasty. It is 2 meters long and1.2 meters wide. It is made of 29026 pearls, diamonds, rubies, gold 15 grams, coral 1997 and other precious materials.