He was planning another invasion of Wei in 427, but destruction of Xia and capture of Helian Chang, forced him to reconsider and back down.
However, Cui did not accompany Emperor Taiwu on this campaign, although he did inform Kou Qianzhi, another Wei official, who was, that the main Rouran force must be found and destroyed.
When Emperor Taiwu engaged Rouran and dealt it a major loss, but was unable to find its Datan, he did not want to advance any further in fear of a trap, and even when Kou informed him what Cui had said, he stopped the pursuit.
Latter four submitted to Northern Wei and adopted Chinese surname of Lü (闾), a short form of Yujiulü.
Dafei subsequently was created Prince Zhongshan (中山王) and was married to Princess Huoze (濩澤公主), daughter of Emperor Daowu.