C215 Hijacking of Prison Guards

How could Zhou Xuanwu let him go get someone? If he called them over, he would be dead meat. He pushed off the ground with his feet, then lifted himself up with his shackles and kicked the back of the guard fiercely.

That guard hadn't been on guard at all. At that time, Zhou Xuanwu was almost two meters away from him, and all he had to do was turn around and leave