I search a romance show from china but I almost forgot everything about it. The main things I remember is a side character couple. The female is older than the male and best friends with his sister. The male lives in the females house and works as a painter which doesn't pay much. Towards the end he has an art show where he presents a picture of her in blue dress from here university days. She is wearing the dress when she accompanies him there and everybody recognises her. Other then that I remember the male painting a wall for her at some other guys house and I think the female drives a motorcycle. I think the female was successful at her job. The show was filmed within the last 10 years. I think more like 2017-2021.

I'm about a year late but I'm guessing it's  Love At Night  ?