C1967 See the Elephant and Say Nothing

About 600 A.D., a hermit named Dan Yuanzi... Extending Chen Zhuoding Ji, he rearranged the original work and added in new observations. The creation of the Bu Tiange that identified the stars made up for the fact that it was hard to pass on the star chart. The shortcomings of the text were not vivid enough, and it had been passed down to this day. "There is a picture in the name