Abstract: As a famous myth in Chinese history of Buddhism, “a stone Buddha floating on the sea” happened in Shanghai in the Six Dynasties. It is said that a stone Buddha floated to Hudu seaside, and it was finally placed in Suzhou Tongxuan Temple. This myth was advocated by Emperor Jianwen of Liang in an article. The Tang Court sent officials to visit the Buddha and then duplicated it in Chang’an City. The myth was also painted in Dunhuang Grottoes and spread oversea. The myth, which originally happened in Hudu, became national. Since the Song Dynasty, Shanghai region has started to compete for the resources of the myth. Clouds Chorography (Yunjian Zhi) applies it to construct the early history of Jing’an Temple, and develops new plots, including a story that the stone Buddha was placed first in Hudu Chongxuan Temple (Jing’an Temple) in Shanghai. Records of Temples (Siji) in the Southern Song Dynasty, Collected Poems of the Eight Scenery Spots at Jing'an Temple (Jing’an Bayong Ji) in the Yuan Dynasty and other chorographic writings construct the sacred history of Shanghai regional society. Shanghai gradually controlled the discourse power of the myth. Jing’ an, originally a name of a temple, became a name of a central area in Shanghai. “Hudu”, the birthplace of the myth, became the landmark of Shanghai and even its new name. The evolution of the myth reflects that mythical resources have unique value in the construction of local society, and it also shows that Shanghai local society sticks to the mythical resource.