1. familiar plot but with some refreshing elements.
2. beautiful piece of film score which are composed by Jay Chou and Terdsak Janpan .
3. surprisingly good acting by Guey Lun-mei (an adorable and charming girl with potential), great acting by Anthony Wong (such a versatile actor, no doubt), refreshing acting by Alice Tseng Kai-xuan (a girl who possesses sublime beauty and angelic smile) and fairly improved acting by Jay Chou (just being himself by acting cool as usual, i guess?)
4. fancy cinematography with good editing and compositing.
5. intermediate visual effects.
6. cool executed scenes to show off music talent.
7. a combination of sci-fi, comedy, mystery, youthful romance (although Jay looks a bit "mature") and probably horror? (the flashback and liquid paper parts really give me the creeps!)
8. some logical flaws. (eg. the desk in the classroom, get what i mean?)
9. flowing storyline with great atmosphere formed by the cool color theme used.
10. and of course, the director himself-Jay Chou, the Chinese pop icon and idol for many teenagers and young adults.
All of the main ingredients above could be found in "Secret". It's definitely worth your time to explore and reveal the secret by yourself or together with your beloved one. It's quite a touching tear jerker (but not as touching as Be With You, personal opinion...) Well, it might not be the cup of tea for everyone, but it is the bowl of soup for me!
Overall, 8 out of 10 for a freshman film director.
Recommend to all of those who believe in fate and love.