It wasn't until they heard a few sounds of resistance coming from the warehouse, which quickly subdued, that Qin Yu and the others saw a group of people who had been holed up in there for three years being forced out at gunpoint by this group of adventure team survivors.
Compared to their previous arrogance towards Qin Yu's group, these men were now behaving very obediently, shrinking back. The difference in their reactions was probably because Qin Yu hadn't been tough with them.
This was human nature - submission and rebelliousness could switch in an instant. Thus, Qin Yu accurately caught the fleeting changes in the gaze and body language of the man who looked like the boss - surprise, resentment, joy, and calculation.
Suddenly, he directed his calculation at Qin Yu and her group, shouting, "They've been bitten by zombies! They have a virus on them! Kill them quickly!"