Zi Collection, Upper Volume, Page 123, Entry 01 In the "Shuowen Jiezi," "ou" is the original form. Also, the "Zihui Bu" notes the pronunciation as "yu qiu qie," sounding the same as "you." It is a type of water bird. The "Shanhaijing" records: The people of the Gu Country wear fish as clothing and eat ou birds. The commentary states the pronunciation is "you."