Cai Mao(?-? AD) An officer under Liu Biao. Cai Mao comes from a noble family in Jing. He is the younger brother of Liu Biao's second wife. His plot to assassinate Liu Bei in order to make Liu Cong successor ends in failure. Eventually, Mao joins the Wei army and holds a high post in the Battle of ChiBi. He is later executed under orders of Cao Cao. He excelled as a naval commander.