I'm looking for a romance novel, but I don't remember the title or the names of the male and female leads. I only remember that there's a name called Chen Yuanyuan?

I'm not sure of the name of the novel you're referring to. However, Chen Yuanyuan was a very famous female name in romance novels. It might be related to some classic works. You can try to search for related romance novels. There might be some clues.