Siheyuan: There Is a Security Department in the Courtyard, Which Makes Me Cry.

The protagonist, a veteran, entered the security department of the Red Star Steel Rolling Mill and experienced twists and turns in the rectification and security work. At the same time, the selection of outstanding family members in the courtyard continues to be turbulent, and everyone is intrigued. The protagonist and the heroine, the technical backbone of the factory, fell in love after experiencing harassment and misunderstandings from gangsters. Their story unfolded in the steel rolling mill and courtyard.