Bossy Husband Who Loved Me Episode 3

Things are getting weird for Chuan as he starts hearing voices that are not spoken. Later, Mu Xiao Xi and Chuan go visit her parents, and an important mission awaits him there. To eradicate corruption, Chuan is looking for a man named Xu to give him the evidence. They decide to meet in a forested area. But... Chuan knows something about Xu's future, which that unknown voice tells him. But what is that voice? And why is it so that he hears it as if Mu is talking, but in actuality, she is not speaking? (Source: AlopaJoyceZ at Mydramalist)