Secret

Secret is a 2007 musical romantic film. A Taiwanese-Hong Kong co-production, it is the directorial debut feature film of Taiwanese musician Jay Chou, who also stars as the male lead and co-wrote the film. In addition to himself, the film also stars Gwei Lun-mei and Anthony Wong. Filming was conducted at Tamkang High School, New Taipei City, Taiwan, which is also the alma mater of Jay Chou. The budget was about NT$65 million.

Synopsis from Wikipedia, CC BY-SA 4.0. Everything below written here.

Poster © the film's rights holders.