1. Shan Hai Jing is an ancient book in the pre-Qin period, and it is the oldest geography book full of myths and legends. It mainly describes ancient geography, products, myths, witchcraft and religion, as well as ancient history, medicine, folk customs and nationalities. In addition, Shan Hai Jing also recorded 75 kinds of strange monsters.
2. Among the weird animals in No.75 Middle School, there are Tianma and Tiangou, but there is no Tiancai, so Tiancai is not an animal inside, and the existence of Tiancai can't be found in relevant records.