Traveling back to the work "Love in the Courtyard", Lin Yu lives in the courtyard as the son of a martyr. As an old employee of the steel rolling mill, her mother was originally engaged to Qin Huairu, but unfortunately after she died of illness, Qin Huairu chose to marry Jia Dongxu, an apprentice in the steel rolling mill. In order to protect his own image, Qin Huairu and the Jia family slandered Lin Yu, causing Lin Yu's reputation in the courtyard to plummet.
Faced with the changes in life, Lin Yu persevered and succeeded his mother to work in the steel rolling mill. He used his spare time to study college professional courses by himself, and finally obtained a college diploma. Through his own efforts, he became a technician and also served as an assistant to the workshop director. In the process, Lin Yu accidentally triggered and activated a sign-in system, which will undoubtedly bring new opportunities and development possibilities to his life.