No. 10 could have been Chen Ge's acquaintance who was trying to help him, or he could have been a mental patient trying to make Chen Ge drop his guard. To find out the real answer, he had to go to Linjiang New Schistosomiasis Control Station.
After making sure he did not miss anything, Chen Ge walked out of the room and returned to the elevator.
There have to be other secrets behind these closed doors. Perhaps the hidden exit that the members used is behind one of them. Chen Ge regretted that he did not bring the hammer or else he could have broken down all the doors. I'll need to pay attention next time.
Back in the elevator, Chen Ge looked at the number dropping, and he finally sighed in relief. He tied the cleaver back on his calf and removed the mask. He took a deep breath. The elevator stopped at the first floor. Before he walked out, Chen Ge could hear someone talking, and the tone was stern.