Initially, Xu Mu had given Feng Que a jade token, supposedly for communication, but in reality, to determine her location.
Feng Que was Feng Luan's older sister, and naturally, he could not stand by and let anything happen to her.
This opportunity of Xuan Yang Secret Realm only opens once in a century in Cang Ming Ocean Territory. As the leader of the three major powers, the Cluster Stars Sect would definitely send people in to search for treasures, and Feng Que, as a cannon fodder cultivator, would most likely be included in the party.
Xu Mu intended to use this opportunity to save her, thus fulfilling Feng Luan's longstanding wish.
The reason he did not take action outside was that the Cluster Stars Sect had placed too many measures on Feng Que. If he took her away, he could easily be tracked.
