Introduction to the Holy Land of Eastern Mongolia:The profound historical and cultural heritage of Mengshan Mountain has cultivated a large number of outstanding historical sages such as Wang Xiang, the filial piety saint, Zeng Zi, the zong saint, Liu Hong, the fortune teller, Wang Xizhi, the calligraphy saint, and Yan Zhenqing, the Yasheng saint. The sage Kong also once climbed Dongshan Mountain and uttered the sigh of Xiaolu. The poet Li Bai and the poet Du Fu joined hands to visit Mengshan Mountain in the fourth year of Tianbao. The two emperors of Kangxi and Qianlong in the Qing Dynasty stayed in Fei County and composed poems many times. Songmeng Mountain, Emperor Qianlong's handwriting "Eastern Mongolia Holy Land" can be said to be a summary of all the previous sages who visited Mengshan Mountain.