Very entertaining. Did not waste time. I stayed for 50 plus EPs, of course, for the couples (Xinger+Yuwen Yue). I hate Reverse Harem. LACK character development for Yuwen Yue. Also, our female lead Xinger changes her mind A LOT. Fickle is not the right term because It's "Friendships". Kissing on the lips is still friendship. Having 4 guys liking you and their reasons for liking you are hard to see why, but it's ok coz you're so great they have to like you coz it's plot and it is not mary sue of you anyway. You sort of exist through time with them, not that you're ignoring their love for you. You just don't do anything about it.  
I dropped this when it was airing coz at that time I was viewing Nirvana In Fire, so my taste for legit dramas had skyrocketed, and PA's lighting was insanely bright that it looked like a "not serious" drama. The filter is okay but the lighting is very historically incorrect. Everywhere is so bright.
but I finished it now and understand the hype.