Swap Swap trouble edition
Haha, I was thinking exactly that. The thing with the eye colors (and speech balloon colors) is a dead giveaway that the author has read Swap⇔Swap and loved the body swap idea.
And just like Swap⇔Swap this manhua is just fun fluff with no pretension to weighty content whatsoever! I kept laughing at how the author glosses over every serious issue that could bog down the easy flow of the story.
If you want exhaustive explanations about how the body swap works...
... or how come everybody everywhere isn't using such a cool trick, since it's on the net and free for all to see...
... or how can Ruanruan be so carefree when such a big deal happens like her ex from 5 years ago turning up at her door with crazy demands...
... you're out of luck, it's just not this author's style.