Desc: Kuai le de dan shen han: Directed by Chong Song. With Xin Cheng, Xue Gong, Longhai Lian, Xinyi Liu. In the early 1980s, there was a group of bachelors in the forging workshop of a shipyard in Shanghai who had reached the age of marriage but still had no girlfriend. Under the leadership of the monitor Shi, they sometimes gathered to vent their negative experiences as workers and performed some naughty behaviors. However, overall, they were happy. Although Liu, with a gentle temperament, lives among them, he seems somewhat out of touch. One reason is that he has a relatively high educational level and can read and write articles on technological improvements in his spare time. The other reason is that he claims to be a determined bachelor. A beautiful female teacher Ding came to the factory night school. The bachelors ware dazzled for a moment, but when they heard that she was going to catch them to study, everyone wanted to escape. However, under the pressure of the workshop director, they still came to the classroom. After a conflict in the classroom and a work error in the workshop, they also realized the importance of knowledge and began to take classes seriously. During this period, Liu's performance was also not gregarious: after learning that Ding had come to the factory, he often deliberately avoided her. In order to solve the marriage problems of bachelors, the factory has proposed a social gathering, and the results are also surprisingly good. Several old single men have made girlfriends. Although Shi has achieved nothing, he is not in a hurry. He has gradually fallen in love with Ding. However, Ding has long been attached to Liu: The two people have been in trouble during the Cultural Revolution and have been in good relationship for many years. Liu avoided her, and her attitude was unusually cold when she recognized him and excitedly expressed her love, all for a reason.