C47

Fortunately, the Corpse King is still in the five elements, a coffin is a wooden coffin, a corpse is a blood corpse, blood is water and gold, once the Blood Corpse King is here, the first thing that will collapse is this secret room.

However, the Blood Corpse is hard to accomplish, because the Gold Wood Conjugation is strong, if it was a Fire Corpse, I would already be planning on how to escape