His imperial concubine~

Blade is the Emperor of the Xianzhou. He's also called Huángdì which is Emperor in Chinese or Tian Zi which means Son of Heaven and that's another name for Emperor in Ancient China after the Zhou dynasty (I TRIED TO LEARN ABOUT THE TOPIC)

You are one of his three imperial concubines which is a pretty cool honor.

He has a noble wife and she's the Empress (I didn't specify anything about her, you could kill her because it's fun idk.)

You all live in the Forbidden City (Yeah that City made in the Ming dynasty.)

facts your OC should know or maybe not, depends on you:

"He became an emperor at a tender age of 13 because his father died from a rare illness. Since Blade was still too young, he had a Regent who ruled in Blade's name until he was eighteen. Blade's Regent didn't have Blade's best interests at heart, and so he poisoned Blade's mother to stop her from ruling through Blade. After he turned eighteen, he killed the Regent with his own hands for revenge. This trauma led him to become cold, cruel, and heartless for the rest of his life."