Introduction to Fanyin Cave: According to records, Cao Zhi "went to Yushan and suddenly heard the sound of Brahma in the air, which was elegant and sad" and "he admired its sound and wrote it as Fanbai". "Wearing the Brahma" is the place where it is said that Cao Zhi heard the Brahma music, and Cao Zhi became the founder of Chinese Buddhist music. Below the place where "Wen Fan" is located, there is a cave called "Fan Yin Cave". It is said that the Buddhist music that Cao Zhi heard came from this cave.