Emperor Jing of Han
Liu Fei was one of the fourteen sons of Emperor Jing of Han (reigned 157–141 BCE). With the exception of crown prince Liu Che, who later ascended the throne as Emperor Wu, Emperor Jing created all his other sons kings with their own fiefdoms. Liu Fei was made the King of Runan, with its capital at Shangcai, in modern-day Henan province. His mother was Consort Cheng, a concubine of Emperor Jing, who also gave birth to Liu Yu, Prince of Lu, and Liu Duan, King of Jiaoxi.