Dadi Leisure Center 3

Leng Xuan ascended the stairs, all the while listening attentively and observing his surroundings. Fortunately, there were no surveillance cameras installed in the stairwell, and thanks to his acute hearing, he discovered that both the first and second floors were empty, without any sound. Upon reaching the third floor, he suddenly heard the sound of a door, so he quickly retreated a few steps down and pressed his body tightly against the wall to avoid being seen.

With his exceptional hearing, Leng Xuan detected that there was only one person's footsteps in the corridor of the third floor. Then came the crisp sound of a lighter, accompanied by the electronic beeps of mobile phone buttons. After chatting on the phone for a while, probably having finished his cigarette, the person hung up and exited the corridor.