I don't think I ever watch similar plot and setting, but you can try:
A Chinese Ghost Story 1 (historical setting, supernatural element)
After the Flowers (historical setting, with martial artist FL)
The Yin-Yang Master: Dream of Eternity (historical setting, supernatural element) It also has Japanese version (Onmyoji 0) with Yamazaki Kento, but Japanese version has no romance iirc. It also has another version with Chen Kun (or Chen Xiao?) but I can't comment since I haven't watch it.
Want to tell more, but I think spoiler tag is still not working. You can check the synopsis.
