Without a doubt, this White Bone Saint is certainly Ancestor Xingtian.
As for how he escaped the constraints of the black hole to come to this world.
Xue An had already found the answer from the incredibly vast information that Ancestor Xingtian had imparted to him.
In fact, the reasoning is very simple. The real Xingtian never left the black hole, and the White Bone Saint that appeared in the outside world was merely a manifestation of his thought.
Perhaps when the black hole was operating, there was an almost imperceptible flaw that allowed one of Xingtian's thoughts to escape and take the form of the White Bone Saint in the outside world.
But if that were all, it wouldn't take long for this thought to be washed away and eroded by the omnipresent spiritual energy.
The only way to prevent it from being obliterated by spiritual power and the Heavenly Dao Laws is to protect it with the power of faith.
