What was the content of 'The Secret That Can't Be Revered'? How did it end?

'The Secret' was a song sung by Jay Chou and a movie and TV series of the same name. The song was about the love story between a teenager, Jay Chou, and his cousin, Xiao Yu. He accidentally discovered a secret that he could not tell. This secret involved his family history and a mysterious girl. The love story between him and Xiaoyu continued to unfold in the family history and the pursuit of this mysterious girl. Would they be able to be together in the end? The movie was about the love story between Jay Chou and Xiaoyu, as well as the difficulties they encountered in pursuing the secret they could not tell. The ending of the movie was more open-minded. The audience could come up with different endings according to their own imagination and interpretation. The final ending of the secret that cannot be said is that Jay Chou and Xiaoyu have experienced many hardships in the process of searching for the secret, but in the end, they have successfully uncovered the secret that cannot be said and found the answer. As a result, they developed a deeper relationship and eventually came together.