I hope this doesn't end with the whole he sacrifices himself trope and then ends up human but with no memory so that 'they start a whole new story'. It's such a lazy, overdone ending.
Haven't heard anything but I wouldn't be surprised if it was because of the whole restriction on historical dramas. I imagine with the story, this will have a few flashbacks which might cross the line into historical drama.
https://www.iqiyi.com/v_19rquittxk.html
https://www.youtube.com/watch?v=MCLFOZGYuqk