(bound form) the legendary Yu dynasty founded by Shun; a state during the Zhou dynasty; a surname (Yu)

the first Chinese dynasty, traditionally dated to c. 21st to 16th century BC; also refers to several later historical states by the same name

Connects a describing word or phrase to the noun it describes, similar to 的 de but used in formal or literary writing.

abbreviation for the 书经 shū​jīng