Qiao Xi and Gu Huainan remarried.
It's not that she still loves him, it's not that she forgives him, it's not that she believes what Gu Huainan said: "I will be good to her in the future", "I will live a good life with her", "He and Shen Qinghe really have nothing to do".
It was because Qiao Xi regretted that she should not have filed for divorce on impulse, and even more regretted that she had left home to get divorced.
He hated himself even more for not being able to protect his unborn child... Gu Huainan discovered that Qiao Xi had changed after remarrying. No longer pestering him, no longer asking about his schedule, even when he and Shen Qinghe were together, she had no reaction, Qiao Xi finally became what he wanted. However, his heart became more and more panicked. It wasn't until the day Qiao Xi officially became a lawyer that she took out the divorce agreement she had drafted herself that he understood that everything Qiao Xi said when they remarried was true. She no longer loved him and remarried him only for his money.