Listen to That's His Voice

I, Mu Cheng, am 20 years old and am a sophomore this year. As for me, in their words, I am a bit naive, a bit silly and a bit stupid. However, the things I do always make people feel a little nervous. Actually, I think I'm pretty good at this: I don't fight, I don't go gangster, I'm still a good young man. I have a sister whose name is: Yu Xiaolin, from S City, age: 21, who is in the same grade as me. We met when we were in college, but what I never expected was that this guy would actually get married so early. The person he was getting married to was named Jiang Xiao, a native of S City, age: 25, and graduated from the same school I am currently studying at. I went to attend the wedding at that time...