```
It can be said that the Western Saints would not do anything that might lead to the destruction of the Western religious sect.
Therefore, even though the Western Saints inwardly wished they could tear the Underworld River Ancestor to shreds, they would not dare to kill him. The price of drying up the Sea of Blood and the Underworld River was too much for them to bear.
Of course, just because they could not kill didn't mean the Western Saints had no way of handling the Underworld River Ancestor. Without killing the Underworld River Ancestor, the Sea of Blood and the Underworld River would not be endangered.
So what could they do? We won't kill you, but what if we seal you instead? Not dying doesn't mean you can't be sealed. And now, the Underworld River Ancestor has unfortunately been sealed by the Western Saints, and theoretically, he won't be unsealed in this lifetime.
