You should know that Xu Tianran is not a fool. He wants to use the Holy Spirit teaching, and naturally will not let the Holy Spirit teaching get out of his control.
It seems that the previous stronghold of Risheng City where Wu Yun was located was one of the strongholds of the Holy Spirit Sect agreed by Xu Tianran. After Wu Yun left, the sect sent other people to defend it.
However, this stronghold is "illegal" in a sense, so its strength is not strong. Huo Yuhao, who was trained by the Soul Sect in the original book, can easily wipe out this stronghold.
Nana was able to run smoothly from Mingdu to Shrek College, which shows the unimportance of this stronghold.
When approaching the college, the three figures showed up