The White Dove

Long ago in a faraway land, the Conqueror's sister is married off to a nefarious ruler called the Oriental Masked King.

Despite ruling his land with an iron fist, rumors still spread that all of his former concubines were led to a grisly fate. Determined nevertheless to honor her country and make this alliance work, the young Princess Consort soon finds herself struggling to adjust to a new foreign court where the Empress Dowager, and the Fourth Prince's concubine, the Royal Concubine, conspire to make her life more miserable than it already is.

One upside to this situation seems to be that the Fourth Prince's caring demeanor along with companionship from the Kooky Princess, the Fourth Prince's sister, make her stay in the oriental palace tolerable at least.

That is...until she catches the eye of a certain Masked King.

Spinoff to General's Cause, takes place during/after it. Standalone work.
Covers what happens between the Conqueror's sister and the Oriental Masked King mentioned in the other story.

Bluebeard/Beauty and the Beast retelling in Ancient China.