Appropriate. The song "A Smile Is Allure" is the theme song composed by Wang Sulong for the TV series "A Smile Is Alluring". The song has a catchy melody and gives people a youthful feeling. "A Smile Is Alluring" itself is a school drama, so it goes with this song. The song is the icing on the cake. It is very suitable to use this song as a youth campus MV.