I've been watching Asian dramas since summer 2018. I really like C-dramas mainly because of the following reasons :

- C-drama makes you DREAM with fantasy, wuxia, martial arts, viusal effects

- Great storylines

- High skilled and handsome actors

- Amazing soundtracks 

I don't rate any drama under 5 considering the hard work needed  in order to release dramas. By respect due to the artists, directors, screenwriters, producers and anyone who takes part in the making of a drama, I don't think it is fair to value this collective work under 5.

To me, giving a 5 means that I really dislike the drama, a 10 means that the drama (or movie) is just perfect  - or nearly perfect !