The Kaiyuan Zhanjing incorporates many fragments of other works, including the star catalogues of Shi Shen and Gan De and a translated version of Indian Navagraha calendar at chapter 104.
The Kaiyuan Zhanjing includes numerous fragments from other works, such as Shi Shen's star catalogues and Gan De's star catalogues, as well as a translated version of the Indian Navagraha calendar at chapter 104.