Introduction to Bagua Brick Carving: This yurt-like tomb is said to have been built under the order of Kublai Khan, the founder of the Yuan Dynasty, in 1275. It is relatively rare to inlaid Bagua brick carvings on tombs. The purpose of Sima Qian's writing of "Historical Records" is to "study the relationship between heaven and man, and understand the changes in ancient and modern times." Applying the basic theories of the "Book of Changes" to writing history can also be said to be the practice and development of the theory of the "Book of Changes" . This is probably the purpose of inlaying Bagua symbols.