the first half of this is a pretty good drama for time travel fans, imo. at about the halfway point, the writers stop telling an interesting story and essentially rehash the first half of the show for another 16 episodes. still worth watching the first half
the transmigration thing seems to just be clickbait because it has no relevance to the story and is never talked about. so if you wanted to watch this for the whole "modern girl goes to ancient times" thing, don't.
1. very bloody fights
2. all happiness and beauty destroyed