Fortunately, after the process of crawling, the metal pipe turned out to be very sturdy. It only shook a few times, and at least it could still accommodate these people.
"How are you doing, are you alright?"
Anying turned his head back and looked at him.
"Don't worry, there's no problem yet. Plus, the breathing in here actually feels rather comfortable."
"That's right, this is a ventilation device, so we should be fine here. Let's go, these kinds of shafts are usually very long, so we need to crawl slowly and be patient. But we should be absolutely safe at this time."
After hearing Anying's words, Ye Chen nodded in agreement, thinking that all of Anying's analysis was correct, including precisely locating this ventilation shaft. If it were him, perhaps he couldn't have accomplished this.
The lookouts responsible for surveillance on the outside heard a loud bang from this side, and then they suddenly rushed over.