C1428 This Old Man Has Been Tolerating You for a Long Time

The sudden sound of an explosion scared everyone and Prof. Du's voice suddenly stopped. He quickly turned his head and saw a shocking scene.

The layer of earth, which had clearly been perfectly fine, suddenly collapsed. This scene was like a slap on Prof. Du's face.

It was very painful, and it was extremely painful.

Just now, they had even confidently said that they were professionals