Learning.

Shi Lang did not know what was happening inside the monitoring room, none of the students were aware that the armors were bugged and they were under the watch of the senior officers. 

Suddenly a voice sounded inside the earpieces of all the soldiers, "This is command center, you all have passed the examination. You are now ordered to retreat and hand over the rest to the commanding officer in the outpost.

Just when the people were doubting their lives, the message was repeated. Jenkins glanced at Shi Lang and the latter returned the gesture. They heaved a sigh and Shi Lang said, "Retreat, we are done here." 

He did not understand why they were commanded to return but as a soldier, the first thing was to follow the orders. Shi Lang had the injured people move first and he patiently waited in the end for the rest of the people. This was his duty, to make sure his group retreats safely.