FL and SFL got switched their identities and replaced for arranged marriage in both dramas. Also some interesting storylines in both.

Princess FL who had sent as an arranged marriage to the desert, that plot was in both dramas. Alen Fang was 2nd ML in the longest promise, now ML in love in the desert.

In both dramas, FL and SFL got switched their identities and replaced for arranged marriage. Also have a main couple and a second couple in both dramas. Great chemistry as well.

FL and SFL got switched their identities and replaced for arranged marriage in both dramas. Also some interesting storylines in both.

There're some similar vibes from these dramas.
Princess FL
Desert settings
Arranged Marriage
Angst

Those are chinese historical dramas with
- very cold MLs
- love triangle
- hidden identities
- some political drama
- smart FLs
- similar relationship dynamics

Both are chinese historical dramas with
- enemies to lovers
- hidden identities
- some political story
- mysterious ML characters
- smart FL characters

Both of these are chinese historical dramas with
- MLs are cruel and red flag types.
- enemies to lovers
- political story
- love triangle

Both are chinese historical dramas with enemies to lovers trope.
MLs are red flags types.
Also have some political aspects in both.

Male Leads in both dramas have the ability which can read other people's thoughts. In Cherry Magic, it works by touching other person. In I Hear Your Voice, ML just could hear them.

Both are Thai series with horror and ghosts theme. Main characters slove the mystery with ghosts, deal with the haunted house.

Both dramas are horror comedy dealing with ghosts and getting to know their problems. Main character has the purpose to sell the haunted house.