Marquis Mu of Jin, personal name Ji Feiwang, was a monarch of the Jin state. He succeeded his father, Marquis Xian, to the throne of Jin. In 808 BC, Marquis Mu married a woman from the royal family of Qi to be one of his concubines. In 805 BC, he battled the Tiaorong (條戎) tribe. During this time, his eldest son, Ji Chou (Marquis Wen of Jin), was born. In 802 BC, after emerging victorious in a battle against the Qianmu (千畝) tribe, his other son, Ji Chengshi (Huan Shu of Quwo), was born. Marquis Mu reigned for 27 years. After he died in 785 BC, his younger brother, Shang Shu, usurped the throne. His son, Ji Chou, was forced to leave Jin.