The two Divine Souls from millions of years ago were fighting intensely, without caring about anything. They didn't even seem to put Ye Xiao in their eyes, though, Wu Shuang did try to not put Ye Xiao in danger.
If not for the secret technique, Wu Shuang's Divine Soul would have been shattered long ago. After all, at his peak, Wu Shuang was only a Dao Manifestation Realm martial artist, maybe a Late Dao Tribulation Stage of the Dao Manifestation Realm.
On the other hand, Old Monster Yan was a genuine Divine Lord. His Divine Soul was much stronger than Wu Shuang's in every possible way.
When both of them were still alive, Wu Shuang relied on the power of the Freezing Sky Sword to go against Old Monster Yan and even caused the Old Monster Yan's physical body to be destroyed, though the same happened to him in the end!
