C518 Fear(2)

Hsu Xiaofeng heaved a sigh of relief and said, "I am in the ventilation duct. Dust is rolling. Especially when I climb. I can't breathe. There's nothing in my bag. There's a mask, medical cotton, and not even a piece of cloth. Do you have a way? "

"No way. Quickly come down and find an exit. Let's see what's going on outside first before coming down. Then hide well and wait for us to come