His father would have a wife by his side. There was also his elder daughter whom he always had high regard for. Very soon after, he might even have an elder son-in-law who would be filial to him.
As such, she would not need to worry for her father even if she had fewer and fewer opportunities to return to Ping Cheng. She would not need to be afraid that her father would feel lonely, have no one keeping him company, or fall sick without anyone's knowledge.
Wasn't such a situation also considered a form of liberation for Qiao Nan?
With such a win-win situation for everyone, Qiao Nan did not have any reason or motivation to stop it from happening. "Dad, still the same words. You just have to lead a good life. I don't have any opinion."