Both are Chinese historical/fantasy movies in which the MLs are gentle and kind scholars who get swept into a powerful world by the FL who is a supernatural being. Both movies have a similar tone and feel.
TEP had the folk fantasy elements that SToTD promised. Their similarities in this sense lie mostly within the first case of SToTD, including...
- Lots of martial arts
- Dark culty vibe
- Forsaken brides
- Demons of all kinds
- Two bickering men