Zi Collection, Upper Volume, Page 10, Entry 01 Pronounced du (falling tone), also pronounced tian li (rising tone), same pronunciation as "ti". Refers to a black fish. Also refers to a fish with four feet. The "Classic of Mountains and Seas (Shanhaijing)" records: The Xiu River contains many yu fish, which resemble the weiyu (a type of ape) that hibernates but possess long claws, and their feet are white and grow in pairs. Also pronounced ding ji (falling tone), same pronunciation as "di". The name of a type of fish. Refers to a large carp.