C443 The Berserk Death Knight(2)

"This is more like a tunnel dug out during a prison break," Zeng Rong said. "I don't know how it became a dried well."

Lin Jianguo was very curious about this place. He ran out of the prison and looked at the floating phosphorus fire. Suddenly, he realized that the phosphorus fire was actually a small iron plate embedded in the wall. There was an unknown liquid in the plate, blue and transparent