Shen Gu, who had previously visited the entrance to the emergency staircase, had guessed that Lin Mumu didn't use her special ability to open the door because there was a hotel surveillance camera nearby.

He speculated that it was for the same reason he couldn't use his "wall-passing" ability in front of others.

Even if her "lock-picking ability" wasn't restricted by a system like his, blatantly displaying "superpowers" under a camera would be inconvenient for Lin Mumu.

Moreover, Shen Gu's current worry that Wu Jiayi had "intentions" towards him was still just his own fantasy.