" Double Happiness " was a song written by Fang Wenshan and composed by Jay Chou. It told the story of love. The beginning of the song showed a romantic atmosphere. The lyrics mentioned that "the sunset will always fall on you", implying that love will gradually develop with the passage of time. Then, the song entered the official narrative, describing the two people who were attracted to each other after meeting each other and finally came together. The song was full of poetic and romantic descriptions such as " In the dark, you are like a star shining " and " We are watching the sunrise and sunset together ". It showed the beautiful scene of two people supporting each other and accompanying each other in life. The word "double happiness" in the song was a traditional Chinese character that represented the beauty and happiness of love, so the song was interpreted as telling a sincere love story.