Great actors and it is defensively worth watching but I don''t know what is wrong with script writers as some things are just, to put it mildly, not believable even for this genre.
Just one of the examples, One of the protagonists is holding a "mystical" pearl in his open hand starring up in the sky while two guys are fighting to get it. 3rd guy swoops in and picks the pearl from his hand and everyone looks surprised?! Then 5-6 episodes were spent fixing that mistake.

Growth of two main characters is carried out very well and it is nicely executed by cast members. Remaining cast is just a good. Chemistry between them is great and very often quite emotional.
Choreography is more of a dance then real fight as focus in on the magical cultivation and CGI effects.
Music is on the spot for my taste, except for a closing song - From my point of view is a bit out of touch and cheesy.
I compare all c-drama shows to "Joy of Life" which is in my opinion a master peace and we will not see anything that good any tie soon...Perhaps Legend of Fei...