C537 drip-blood binding

"This door isn't that good. It seems that we need to think of another way." Gu Lvhan said as he looked at me.

"Mm, I'll listen to you."

Gu Lvhan used a very strange method to open the door. I saw him use a few tiny stones to stick to the door, and then the stones began to glow black.

With a flash of light, the door was opened.

"This is the Darkness Stone that can be used to break the seal