I don't like melodrama type of shows, especially those in fantasy genre because it means they can just add zeros behind the years to make it work (eg pining for lover for 60,000 years). My cup of tea is usually rom-com but this show really pulls me in and in spite of 49 episodes (another reason not to like fantasy genre) which normal has tons of fillers and unnecessary side characters that don't add to the story, it surprisingly works.
I shed tears in almost every episode after the midway, it was really that good. There is no 'boring' episodes and oh, the OST is simply amazing.
If you are into xianxia and you don't mind bittersweet storyline that span across a few lifetimes (and lives), this is an especially great show. The CGI really delivers and the fight scenes are really believable and at the level of some movies.