 Feng Liao was the maidservant of Princess Jieyou (解憂公主), who was married off to a Wusun king.Feng herself later married an influential Wusun general, whose good standing with Prince Wujiutu (烏就屠) of the kingdom later proved beneficial to the Han dynasty.When Prince Wujiutu seized the throne of Wusun in 64 BC, after his father died, there was fear in the Imperial Court of Han that Wujiutu, whose mother was Xiongnu, would allow Wusun to become Xiongnu's vassal.