Although they couldn’t verify Natalia’s speculation about the waiting area and runway, the trapped people instinctively believed her from her logical tone and started looking around while they destroyed robots. 

As for Xiang Ning, he remained hunched over, doing his best not to get found as he crept up to the large metal door at the end. There were three notches, and, as he imagined, they required keys. He didn’t think he could find the keys on the thousands of robots, so all he could do was find another exit like the rest. 

Admittedly, the vent pipes were present, as Natalia predicted, but they...