C552 This door is called Chopping Stone

At first, I really couldn't find a way to break these lines, but later on, the King Nanshan found a way and taught us that we need to integrate the end of our mana into these lines and make these lines into a connection with our mana.

"This should succeed. We will use our mana to change the factors of these lines and then let the stone slaying door automatically open. This is the best way