So basically she was originally pregnant with yuan ze's child.Fu shen xing finds out and forces her to have an abortion (I think he threatens her by saying he will kill yuan ze or something).After that he yan contemplates killing herself and doesnt because she still wants to get revenge and go back to yuan ze.She gambles her life and almost dies just to get a phone call with yuan ze,since originally fu shen xing didnt want to let her contact him but since he genuinely 'fell in love' with her he agrees as he cant bear seeing her harm herself.Fu shen xing forces to have sex with her since she cant refuse since he will have sex with her anyway and makes a hole in the condoms to get her pregnant.Then she ends up pregnant with fu shen xings child she cant abort or get rid of the child because of the strict security and since it may kill her.The ending was she was originally going to be forced to marry fu shen xing but because she found proof with the help of another guy,forgot the name,and yuan ze fu shen xing dies by suicide and she raises the child with yuan ze.
BTW in the middle of the story they did escape for like half a year away from fu shen xing but he finds them because he was going to be in a business marriage with a rich girl,who was he yans friend but he didnt know and she didnt know he was bad,and finds out when she calls he yan.He gets one of yuan ze's fingers chopped off,confined he yan and gets officer chengs daughter pregnant who dies by a car accident.He also sends a letter at the end of the novel about how he knows he cant be forgiven and how horrible he was but he yan just rips it up and throws it in the in the bin.
Overall he turns psychotic because he isnt the original fu shen xing hes someone else who took the boys place and was originally a death sentence prisoner but swapped places with him honestly I dont know how he swapped places.His excuse was because he never received love when he was young he wanted to live with he yan,who he loved but she didnt love him,forcefully to teach him love but she rejected because she loved yuan ze.Honestly,yuan ze is the best guy he was with her throughout this entire situation even when he lost a finger he never complained and his love never got weaker even when he saw his wife rapped by fu shen xing in front of him and when he was beaten.There was a bit where he had to try resisting and remembering he yan when given pills that made you forget your memories and he stayed in Spain to get evidence and ended up back with he yan.Without him he yan would have died.Honestly,the ending was good but fu shen xings death was too easy he just kills himself when stuff went to shit with the excuse of how 'she didnt love him.'It just felt like he was avoiding punishment and acknowledgment that he was wrong so he just ended his life.Ontop of that he contradicted his words sooooo much.Like he says hes not with other girl but gets officer chengs daughter pregnant and says he wont threaten anyone but does that like five seconds later and says he wont force he yan but does it anyway.
If I find the original translated novel I will post it here.The best thing about the story is he yan is SANE.she ain't like other girl who fall in love or forgive and forget she powers through with all her might and ends him,literally.