In Cai Jun's novel, Tian Ji, Sa Dingding was an important character. Sa Dingding was a famous monk of the Xizang Bon religion, a musician, and a poet. She used to be a nun in a temple. Later, because of her love for Buddhism, she left the temple and began her own cultivation and creative career. In the novel, Sa Ding Ding had a complicated relationship with the main character Fang Yuan, and there was a certain cause and effect relationship between the two. Sa Dingding's image was more profound. She represented a spirit of pursuing freedom and truth, and also had a certain symbolic meaning.