The other Shen Yus also had no reason to object.
It was simply to temporarily borrow the Celestial Dao Tree.
The binding between the Celestial Dao Tree and them involved a more fundamental existence, and was even related to the Gray Mist Space. If the Tongtian Sect Leader really intended to take this opportunity to investigate thoroughly...
That would indeed be something to look forward to.
In any case, once the association agreed, everything began to rapidly progress.
The Tongtian Sect Leader obtained the Celestial Dao Tree from the High Martial World and took over the command authority of the entire association legion in this great war; even he was a bit shocked by the terrifying foundation of the Celestial Dao Tree.
