When Mary left the vehicle swiftly, Shi Tian was dumbfounded by her quick retreat.
Taking out his Cellos device, Shi Tian checked the time and realized it had only been around 3 hours or so.
And given how punctual she was at waking him up, he didn't think that she truly took over the night guard because she wanted him to rest more.
'So her reasoning was false and merely tried to cover it with constant laughter.' Shi Tian concluded silently.
Honestly, he wouldn't have come up with such a conclusion had it not for his intelligence increasing. Connecting all these pieces together wasn't easy if one didn't pay attention to all the tiny little details.
Just earlier, Mary claimed that the watch went out of battery because of his implementation, but the watch didn't run on battery to function.