C340 Dark Substance

"En, you guys prepare for reinforcements. Do not let even one of them go. I will do my best to ensure the safety of the residents."

Soon, Qin Chuan disappeared into the building across the room. His footsteps were light, so the sound control light didn't come on.

"Qin Chuan, it's Liu Jianguo. You have to protect your own safety. If the situation goes beyond your control