It shouldn’t be because it fits the plot and is the theme song of Fantasy City. "Fantasy City" can be called the youthful memory of those born in the 80s and 90s, and Jay Chou's songs have accompanied a generation throughout their youth. The summer fantasy masterpiece "Fantasy City" produced by Yaoke sincerely not only breaks through imagination and presents dreamy scenes beyond specifications, but also invites Jay Chou for music cooperation. It coincides with the release of Jay Chou's new album, and he specially provided the important song "Shouldn't" from the new album as the theme song of the TV series "Huan City", adding more elegance to Huan Cheng.