20 1 1 Who knows the name of the music played when the library of Tianjin University of Commerce opened and closed in April? Now it has been changed to a revolutionary song. Want to know the previous songs. One * * * three songs: 1. Letter to mother, 2. Unknown (although it is my favorite. . . Friendship lasts forever, and occasionally there will be a fourth song, but I can't remember the light music and music clearly. . . .

Haha, it seems that the landlord is also a man of heart. I have also paid attention to it. I also asked questions on Baidu. Finally, I listened to Richard Clayderman's songs one by one before I found them. Hehe ~ it's been half a year ~