First off, we can only blame the low budget on this drama for everything that happens lmaoo.
I really recommend this if you want a good laugh, even if it's laughing at how weird the drama is (which I did a lot).

STORY:
Time travel story, Zhang Peng gets into a poolside accident and he gets transferred into Crown Princess Zhang Peng Peng's body. He has to deal with his new identity and is stuck in a 'love triangle' (or love quad i guess), though he doesn't really care about any of it since he isn't attracted to males (in fact, he tries living his life enjoying quality time with the other females in the harem using his new identity as a woman to get physically close with them). As for the relationships: Crown prince Qi Sheng likes his brother's wife, while the Ninth prince likes the crown princess (peng peng). The story focuses on these relationships and how they affect the characters into doing what they do. Don't think there's no real point to the drama though, because there are still the generic schemes and power struggles seen in dynasty dramas, though they may be hidden under the comedy.
I think even though the drama was strange at times, it still followed a unique plot and the struggle between peng peng and the crown prince's relationship. Also I think the highlight of the show would have been the language - peng peng often says things in english like 'im sorry' or in korean like 'oppa', and 'eottoke', giving us a good laugh.
Here's a hint though: there are actually 2 different endings to the story, so make sure to see both if you feel like you need more explanation to the ending.

ACTING:
I wanna give an applaud to the actors, they did a great job portraying their roles. Crystal does well acting like a man in a woman's body, and her korean and english really cracked me up. Peter does well in portraying a stoic and emotionless crown prince, but also does a great job at showing how an emotionless man can show emotions too. Side characters also do well at assimilating into their roles and acting comedic as well.

MUSIC:
Surprisingly, there were good songs that I would voluntarily listen to even outside of the drama. Sometimes I felt the music being repetitive but that's not really a problem. The point is, they were able to set the mood in the drama.

REWATCH/OVERALL:
I'm not one to rewatch dramas, and I considered this a short fling to watch since I was bored out of my mind and nothing else really spoke out to me. This drama is better to watch if you want a good laugh while also enjoying some plot here and there. Overall, I would say this drama was unexpectedly 'good' enough that I finished watching all of it. The first ending was a bit lacking, the second one more of a cliffhanger, but I've heard that in low budget dramas like these we can only expect these type of endings. I for one wouldn't regard the first ending as the ultimate ending, since the second ending had more added to it.
I also have my own theory that I commented on the second ending episode on drama cat's video on youtube (that's where you can watch it!), but you can ask me here if you want to know what I thought about the ending :)