Same author, prequel .
Immortal, demons and ghosts realms are unstable.
Nothing and no one is as it seems
Love and hate, revenge and misunderstanding lead to tragedy
Death in most cases is only the beggining or restart of a new story
It seems that after thousands of years, same mistakes are done , with the same tragic result

Both cast Zhao Lusi as Female Lead
In both dramas, FL has 3 pretendents, while she unknowingly already has one of them in her heart
In both dramas, FL declares that she will not accept to share her spouse ,( no concubines)
Both ML receive proposals from other ladies, but declare they will only love the FL
Both ML are strong fighters, domineering personalities, are cunning and smart, hold military power and influence in the palace
Both have happy end

Both are historical costume dramas, featuring ML with hidden past, plotting revenge
Both cases the ML is cunning and smart, and influences the palace politics
Both include Leo Wu in their cast

Both have Leo Wu and Zhao Lusi in their cast.
Both have slow burn romance and hidden pasts
Both are revenge driven
Both feature strong female leads
Both cases, male lead falls in love first
Both have happy ending

Both female leads have good martial arts, are independent , noble and supporting families
Both female leads have admirers to choose
Both male leads have secret traumatic past and are planning for revenge
Both male leads reject advances from other female leads
Both have happy ending

In both dramas, the couple is balanced, they love and sacrifice unconditionally
There is no love triangle, nor nagging female
Male lead falls first in love
Between country and love, both ML will put first their love
Both have happy ending

Both have female lead time travel
Both havd a struggling romance with happy end
Male lead falling in love first

Proud, independent female with great fighting skills and no-nonsense, direct approach, who has a supporting, loving family. Male lead is elegant and handsome, aparently gentle and educated, but has a hidden secret story and purpose. Palace fighting for power. Male lead confess first ?