The helicopter landed on the roof but no-one was there.
Yu Chen's men immediately realized that the access door might have been kept locked for security purposes so without thinking twice, they destroyed it.
As soon as the door was opened, choking people scrambled to get out. Yu Chen was already equipped with a breathing apparatus as he ran towards the opened door. And in a blink of an eye, he was gone. His men could only curse as they all dashed inside the door to follow him. They had been pleading him to stay outside and wait but Yu Chen was just unstoppable. They had never seen him in such level of extreme desperateness before.
The call was still connected as Yu Chen ran down the dark stairs. The only thing he could hear at that moment was her voice ringing like a song of life from the earphone that was plugged in his ear. He couldn't even hear the beating of his heart, but her voice alone.