Jay Chou's movie "不能说的秘密" as you can see from the below video. There are 11 episodes on you-tube :


The weakness of the movie are :
1) Jay's speaking voice is very unclear. If the movie is without subtitle, we totally don't know what is he talking.
2) The movie storyline is complicated, it is hard for stupid people to understand the movie. For example, she traveled to 20 years in future to find him, so meaning she is older than Jay for 20 years. So meaning all her friends don't know Jay's exist but all friends of Jay know her exist.

3) Jay didn't correct the misunderstanding between "Xiao Yu" and him. First misunderstanding was Jay kissing with another girl in another room and let "Xiao Yu" see it and misunderstanding about it. Second misunderstanding was Jay's hand is wearing the lucky string that given by another girl and causing "Xiao Yu" misunderstand about it. Jay didn't solve the both misunderstanding in the movie, so the movie is not settle down the dilemma very well.

4) When nobody trust her that she did travel to the future, why don't she prove to everyone? Why need to keep secret? Everyone don't trust her, saying she got mentally problems, laugh at her, causing her not dare to go school, everyday lock herself in her room until she get sick very badly. Why don't she just do a demonstration to play the piano prove to everyone that she really can travel to the future?

5) The movie is confusing. For example, she sick until very badly, she was going to die already when she was using the liquid paper to write message on the table, why after Jay travel back to find her, she can suddenly look like not sick at all?

From Wikipedia at http://en.wikipedia.org/wiki/Secret_%282007_film%29, it says "Just before the piano room is completely destroyed, Xianglun travels back to 1979. He sees Xiaoyu, and she sees him and smiles, but doesn't seem to know him. The last scene is when the 1979 Tamkang (Danjiang) Secondary School graduation picture is taken, in which Xianglun and Xiaoyu are present. As the old piano and the piano building have been destroyed, Xianglun stays forever in the past with Xiaoyu".