Ji's mother princess was Princess Xuancheng in the late Northern Wei Dynasty, her father was Emperor Xiaowen of the Northern Wei Dynasty, TaBaHong, and her mother was Princess King Jinxiang, so Ji was also the grandson of Emperor Xiaowen. Princess Xuancheng married Tuoba Si and Yuan Di of the Northern Wei and Ming Dynasties and gave birth to Jiyuan. It is worth mentioning that during the Northern and Southern Dynasties, political marriage was very common, and the marriage between dynasties could strengthen the relationship between the two countries, which was one of the reasons why Princess Xuancheng married the Northern Wei Dynasty.