Immediately, Chen Xiao realized something. It seemed that the object inside the ceiling window of the elevator was suspended deeper within.
So, the specially designed groove was not made for the wrist.
But for the elbow...
In that case, the ultimate solution to this elevator puzzle was to have someone in the elevator press their shoulder against the ceiling and stretch their whole arm into the window... to touch something!
Hmm...
It had to be said, Chen Xiao's train of thought was correct. About 40 to 50 centimeters away from the "hidden window", indeed there was a button. As long as he pressed this button, the countdown on the phone would stop...
By now, the timer had dwindled down to 2:08, leaving only 2 minutes until the end. Chen Xiao had spent nearly three minutes finding the puzzle, what remained was to solve it.
Thus he quickly jumped down the makeshift steps he had constructed using the elevator's handrails and side walls and swiftly scanned his surroundings once more.