The Han ballad Bu Chu Xia Men Xing (Walking Out Through the Gate of Xia) written in 207 by Cao Cao, says that Mt. Tai, where "ancient white elms grow and osmanthus trees line the paths," is separated from heaven by a distance of only four or five li, and when men become immortal they go there to pay homage to the Queen Mother of the West.
樂府「步出夏門行」，說泰山離天不過四、五里，人們成仙後，就前去「歷歷種白榆，桂樹夾道生」的泰山拜謁王母。