C204 Immortal sword

"Just now Dagol said that the people from Tang Family fell down and disappeared. Look, there's a hole in the ground that's like a floor tile. It seems like there's a large moving board controlled by a mechanism inside." Wang Gongnan said as he wiped the ground with his finger.

"Why don't I try drawing it with my sword?" Wang Yu said.

"Hehe, Sister Yu, I wonder what metal this is