C1561 He Forced His Way in

After walking around for four to five minutes, Meng Ran followed Gu Zhongqun and arrived in front of a sealed stone room.

The door of the stone room seemed to be made of steel. It shone with a dark luster and was three meters long and wide. Its thickness was unknown. There was a keyhole in the center of the door, which seemed to require a key to open.

Upon seeing the keyhole on the door