Morning time-
After listening to the whole story, every sect leader knows that if the king of Sullegar, Chiyou, comes back to life, then there's no way that they can stop him from doing what he wants to do.
Not only do they have to worry about the arrival of The King of Sullegar, they also have to worry about what Mao Xia wants to do.
Tian Qiu told them all that the path to heaven is from mortal world only, thus if Mao Xia opens the portal to Demon world to align with them and attack Heaven
Then demons have to enter the mortal world and once they enter mortal world, they all don't know what will happen to all of them (mortal).
So, they have to stop Mao Xia also, but how?
Mao Xia now holds Yin and Yang, there is no one who can defeat Mao Xia right now.
For now, all the sect leaders have left for the Dragon Hall sect located in the sky as that is where all the students have fled to.