The Three Stele Death Tomb Formation was indeed created by the Saint Master, but the entire array mainly relies on the power of the three ancient steles, so there are no particularly obvious weaknesses.
The Saint Master's advantage is merely his understanding of the Three Stele Death Tomb Formation, allowing him to more effectively handle the array's attacks, enabling him to break the formation a bit faster.
Besides, being trapped by his own array indeed made the Saint Master feel a sense of humiliation.
"Chen Yu, your end will be even more miserable than Yan Xuetian's, I guarantee it!"
The Saint Master looked at Chen Yu, seriously scrutinizing him for the first time, as if trying to see through him.
The fact that the Three Stele Death Tomb Formation fell into Chen Yu's hands already made him extremely angry.
Furthermore, Chen Yu and his companions quickly supported and disrupted his plans, pouring oil on the flames of his fury.