I want to find a movie title, but I can't remember it. It should be from Taiwan Province province.

Try the Hong Kong movie "I really want to be with you"

Plot: Ouyang Guannan (Shi Ya) and Shi Tujie (Hong Zhuoli) are a pair of common complainants on campus. Both of them love photography and are equally competitive. They are attracted to each other, but they always quarrel as a way to get along. Despite the constant noise, the love between the two lush teenagers is still growing, leaving an agreement under the rainbow in the back mountain, but because of a misunderstanding at graduation, they missed the fate. Four years later, the two met on the anniversary and naturally became lovers. When the sweetness continued, Ajie stood me up once and buried the curse. Meeting again is a ghost road. Although Nan and Ajie can still see each other through Yin and Yang, in others' eyes, Nan has become a muttering psycho. Arguing with his father (Xu Shaoxiong) and his brother (Chen Jiale) all the time, Anan finally has to face the fact that Ajie is no longer alive. ...

Please refer to Baidu Encyclopedia for details.

I told you to try. Why not read the detailed story in the encyclopedia? Need to add? This is the movie.