In the first film, due to the recklessness of Sanyuan at the beginning, he and Cheng had a lot of misunderstandings, which made their impression very poor. Later, after the two worked together, Sanyuan gradually discovered the advantages of Cheng, and they also had mutual affection. Finally came together.
In the second part, after Sanyuan and Feng got married, Sanyuan was still very hard, which worried Feng. They were very unhappy and Sanyuan was transferred. Feng had a one-night stand and their relationship was in crisis. Sanyuan was very angry and deliberately stayed with the prodigy to get back at Feng. Later, unfortunately, she was attacked by a masked fairy, and then she recovered slowly under the careful care of Feng, and gave birth to a son and a daughter.
In the third part, Sanyuan was promoted to trainee inspector of the Ministry of Communications, and his work was busy. On the issue of their children going to school, they also have constant conflicts. Later, their son "Jiajia" was killed by a masked goat due to the negligence of Sanyuan, and his feelings cracked and began to separate. Later, Feng watched his daughter being abducted by bandits, but there was nothing he could do, and he gradually understood the difficulties of Sanyuan. They Qi Xin worked together to save her, and they made up, and Sanyuan was pregnant again.
In the fourth part, Sanyuan is pregnant, but she is very ill. With the care of his family and his own efforts, Sanyuan successfully gave birth to a baby boy, and the mother and son were safe. In the process of attacking Hongyingshe, Feng was framed by Hongyingshe's elder sister, had sex with her and was threatened. Later, he confessed to Sanyuan and got her understanding. Finally, the peak was calculated by the new leader of Hongying Society, and his life and death were uncertain.
It may be a bit messy, I can't remember several episodes. I'd better see for myself.