"Predecessor 4: Young Marriage" is a romantic comedy film directed by Tian Yusheng and starring Han Geng, Zheng Kai, Yu Wenwen, Zeng Mengxue, etc. This movie tells the story of Meng Yun and Yu Fei, two protagonists who break up with their respective girlfriends over trivial matters, let go of themselves in nightclubs, parties and dating apps, and enjoy the so-called "** single period", which has triggered a series of hilarious stories. 
While continuing the light-hearted, humorous and close-to-life characteristics of the first three films, the movie also adds some new elements and themes. With the background of "young marriage", it delves into the confusion and choices of contemporary young people in love and marriage. Meng Yun and Yu Fei in the film, facing the pressure of family and society, are neither willing to settle down too early, nor willing to give up their freedom and dreams. They use various ways to escape and resist, only to find themselves increasingly lost and lonely. The movie uses humor to show their absurdity and helplessness, and also shows their growth and transformation in a warm way. 
The cast of the film is strong, and the performances of Han Geng, Zheng Kai, Yu Wenwen, Zeng Mengxue and others are very good. The tacit cooperation between Han Geng and Zheng Kai makes people laugh, and the dialogue and interaction are full of laughter and wit. Yu Wenwen shows an independent and confident female image, while Zeng Mengxue is a gentle and lovely girl full of expectations and fantasies about love. The emotional entanglement between them and Meng Yun and Yu Fei is also very fascinating, both sweet and bitter. 
The film's ** is also very good, the interlude "Decent" and the theme song "Say Scatter" both complement the atmosphere and mood of the film. The lyrics of "Decent" express an attitude of not dragging and not pestering after a breakup, and the melody is beautiful. The lyrics of "Say Scatter and Disperse" express the feeling of unwillingness and reluctance after breaking up, and the melody is equally moving. Both of these songs are in line with the theme and style of the film, and they are easy to resonate with the audience. 
Overall, Ex 4: Young Marriage is a movie worth watching. It has a wonderful plot, excellent actors, and beautiful **, which makes people feel the complexity and preciousness of love in laughter. It is not only a comedy, but also a film about growth and choice, which makes people think about their own views on love and marriage, and are full of anticipation and confidence in the future.