乞伏乾帰
Later in 400, when, in light of defeats by Later Qin, the Western Qin prince Qifu Gangui surrendered to Tufa Lilugu, Tufa Lilugu sent Tufa Rutan to welcome him. It might have been at this time that Tufa Rutan gave a daughter in marriage to Qifu Gangui's son Qifu Chipan, but it is not completely clear. What is clear is that later in the year, Qifu Gangui took flight again and surrendered to Later Qin, and when Qifu Chipan tried to join Qifu Gangui but was detained, it was at Tufa Rutan's suggestion that killing Qifu Chipan for wanting to join his father would appear narrow-minded that Tufa Lilugu did not execute Qifu Chipan.