Abstract:To the south of Xi Xingsi hutong, Xi 'an Men nei Street, Beijing, there is a narrow hutong called Tuyuan Mountain. Because there had been an artificial hill named for the Yuan dynasty building. Legend has it that the Ming Dynasty was the emperor Jiajing double Ninth Festival climb, but unfortunately to the early Qing dynasty has gradually abandoned. Tuyuan Mountain was completely razed during the reign of Emperor Yongzheng and Emperor Qianlong.