Yulilyn:

My theory: they're in a timeloop and Nanfeng is Nanheng And Song Yimeng had always been Song Xiaoyu. Song Xiaoyu got a fictional script, travels into script, goes thru events like how we're seeing now in the drama. Later on, she will likely tell Nanheng script details and her transmigration. And as they fight against fate together they all Die in the script world. but then Nanheng manage to come out to Song xiaoyu's world in the body of Nanfeng but at a time before she travel into script. This will also be the time point the drama we watch begin.  He knows she'll go into the script and does the same thing of changing the original fictional script to what we see now. So we loop back to beginning.  This time will probably have more changes So he can be with the song yimeng he knows again.🤔🤔🤔

Got this idea from one of their douyin caption "I stand at the end, trying to change our past"

I think there was a timeloop! Perhaps SXY and NF were navigating different timeloops in each dimension, and in the ending credits, they finally meet after knowing everything that happened. Looking back I find it suspicious with the way NF acted in ep 1. And there were hints that NF is NH in the drama too. Like his natural ability to solve algebra and speak English, and the fake Lord Qianyu who says that NH is so similar to NF, and all that.

Based on Avenue X 's suggestion that "Nan Feng could've gone to the script world before SYM too , amd they can make a season 2" ...if that has happened that could mean he was the reason whole Li Shilui character got created in the script world which wasnt there in the script

Finished it.  Didn't particularly like the ending but didn't hate it either.  Overall I enjoyed this drama and I actually like it better than Prisoner of Beauty which I still have finished yet because I was exposed to a spoiler that I just can't get past.