Which movie are Roi and Liang Xiaoxiao?

In "If You Are the One", the song that Sang Wu sang in tears while driving was called "Walking on the Bed". This old Japanese song has been covered by Teresa Teng and Guan Mucun in China. Ge You and Sang Wu sang an old Japanese song named "Star" in "Four Sisters" izakaya. According to the audience, although the film made by Ge You and Xiaogang Feng (listening to the song) is "If you want to laugh, you have to use anesthetic", the eyes of many viewers are wet in these two episodes of the film under the influence of these two old songs.