C531 Determination

"Dragon?" Lan Qing pointed to the ground. "You mean, it is still digging these pipes?"

"Yes." Qing Yuan looked at the screen and said, "The tubes are concave and curved. They are obviously developed by irregular objects. Also, it is indeed much faster than a machine. Logically speaking, our machines have the highest cost, the fastest speed, and the collapse of the development is also the proof