After searching through the gray fog for more than ten hours, big beard and his companions returned to the secret base.
There was no time limit for patrolling in the gray fog, but most cultivators would patrol for more than ten hours.
In addition to balancing work and rest, it didn't delay cultivation, so it could be said to be the best of both worlds.
The secret base was originally underground. When the gray fog covered the ground, it had been moved at once.
It was thanks to this that the survivors were able to avoid the Bastion's attack. Otherwise, they would have been buried alive.
The once dangerous ground was now very safe because of the gray fog.
According to what Tang Zhen had said, as long as all the runic magic circles were not destroyed, there was no need to worry about the gray fog disappearing.
As for the location of the runic magic circle, it was a true secret, and few knew about it.