 They both married Xianbei princesses.Sima Fei's wife was named Huayang (), who was the daughter of Emperor Xiaowen; Sima Chuzhi's son was Sima Jinlong (), who married a Northern Liang princess who was a daughter of Xiongnu King Juqu Mujian.More than fifty percent of Tuoba Xianbei princesses of the Northern Wei were married to southern Han Chinese men from the imperial families and aristocrats from southern China of the Southern dynasties who defected and moved north to join the Northern Wei.