Its a visually dazzling spin on the concept of Chinese alchemy combined with wuxia /xianxia drama structure.

The cgi, action choreo, world building is breathtaking. But the plot has been made overly complex with twists that doesn't hit very well, the overall schemes are quite flimsy and can be seen through if the characters were given more common sense, filler episodes with filler scenes and draggy pacing got boring pretty fast. Female lead being declawed and just being reduced as a maid and not to mention the "love quadrangle" made me go wtf a few times.
But overall it's a very unique and different genre for south Korean dramas and I can respect that. The acting is solid especially Jung so min which I think kinda saved the series for me. The production set takes huge "inspiration" from Chinese historic/xianxia dramas to build gorgeous daeho but as a non Chinese or non Korean person I don't think it's my place to nitpick in that.
The ost is a banger for me as well. Would like to see how they finish this off in the last 10 episodes.