- There's a battle between immortals and demons in both dramas (Xianxia)
- Both the FL have an unclear identity and are weak in the beginning
- Both the ML are powerful demon and are cruel (there is some choking involved in both dramas, and not the sexy kind...)
- In both dramas, the FL and the ML must ally for their own interests
- In both dramas, the casting and the production (sets, costumes, music, special effects) are excellent

- Both FL have been married before
- Both FL are smart and intelligent, and overcome the (many) difficulties that come their way.
- Both ML are powerful and help the FL

*The Double is a little more focused on revenge, while Flourished Peony is more focused on personal and professional growth, but the dynamics between the leads are similar.

- Both have a cold ML;
- in both dramas, the leads are in an arranged marriage;
- both dramas are romantic thrillers.

- Both are romantic thrillers with a dark vibe
- in both series, there are secrets between the spouses
- both dramas deal with mental health issues

- The main leads were married
- They are stuck together again (because of work in Emergency Couple) and bicker a lot