Investiture of the Gods maybe? There is multiple renditions.
https://mydramalist.com/search?q=investiture
The Chinese Paladin series also has immortals/gods too
There honestly isn't many unfortunately :( But get prepared for later this year and 2021, a lot of these types of dramas are being planned and recorded rn! :)
The Journey of Flower - Oldie but a goodie
The Destiny of White Snake - CGI is definitely not as good as the other dramas but good story and acting (has Yang Xi)
Some of these are more wuxia but they all have some degree of fantasy/ magical element
https://mydramalist.com/27178-ever-night Not bad, lots of magic and adventure. Not particularly romance-filled tho.
https://mydramalist.com/28674-joy-of-life a bit of romance, politics, and plot twists galore
https://mydramalist.com/26037-novoland-eagle-flag one of my favorites, the three main leads have an amazing friendship, romance too. plenty of fantasy elements
https://mydramalist.com/28723-the-untamed saving this one, but everyone raves about it
https://mydramalist.com/23171-legend-of-fu-yao the last part is messy but it's mostly really good
https://mydramalist.com/26385-three-lives-three-worlds-the-pillow-book a spin off of Eternal Love, Bai Feng Jiu and Dong Hua's love story
https://mydramalist.com/19464-princess-agents less dreamy, more bloody, but imo one of the best China has ever created.
https://mydramalist.com/26760-the-legends utterly amazing even though the last episode is ..odd. But it's kind of unnecessary anyway. The sensuality is kind of off the charts in this one. Gorgeous cast.