On normal days, having overly sharp senses can be a burden, but during a battle, it would be best to be as sharp as possible. There's no reason to suppress it.
The extremely sensitive hearing made Bu Xiao's transmission quite clear, and although he could not hear Buddha Son Yankong's zen-like responses, from what Bu Xiao conveyed he knew that there must be Dao Child of Martial Saint Mountain's plot involved in this apparently coincidental battle.
Either they underestimated their own strength or did not expect Elder Xu to be so resolute, the matter escalated beyond control. Otherwise, where would Bu Xiao's apologies come from!?
Just now, Elder Xu, who had issued the Tongming decree with his Divine Sword, didn't dissipate the Tongming Sword Body either, and also heard Bu Xiao's transmission clearly.