The novel you may be looking for is Military Doctor Crossing: Cold King's Exclusive Favor.
It is rumored that the cold-faced King Fury's Little Imperial Uncle of the Lichuan Kingdom is not close to women. Lan Mo leaned in his arms and bared his teeth, and the royal uncle smiled curtly: this king only favors you. It is rumored that the cold-faced king of Li Chuan Kingdom has a broken sleeve. Lan Mo stood in front of him with her hips thrust out, pulling off the jade hairpin on her head with one hand: Where does my mother look like a man? It is rumored that the cold-faced king of the Lichuan country's small royal uncle is suffering from stubborn illnesses and will not live long. Lan Mo has a silver needle in one hand and a scalpel in the other: lie down, don't move, and you'll get rid of the disease.
Special Forces doctor Lan Mo once crossed into the destroyed half of the face, was exterminated by the orphan girl, coincidentally by the cold-faced King Fury little uncle carried back to the house. From then on, he disguised as a man and became his personal guard, during the day with that beautiful and innocent face to show people, at night she will be half of the side of the ghost face in and out of the mansion to look for clues. In case of provocation, she can nail a house with a needle; in case of trouble, she can put down everyone with a packet of powder; in case of offense, she can make people despair with a scalpel.
The Army Doctor of the Lu Family
The author is Dreaming of Flowers. This is a romance novel that travels through empty ancient times, mainly about Lu Zhiqing, the Lu family's military doctor, who travels to a country called Great Zhou, meets the previous traveler, Lu Niangniang, and the love story with the imperial son, Xiao Jing. Lu Zhiqing: the female protagonist, originally a military doctor in the modern era, crosses over to the country of Great Zhou due to an accident and becomes the eldest lady of the Lu family. She possesses superior medical and martial arts skills, as well as a human skin mask (the adjective under the mask pouring out of the country).
After crossing over, she meets her real mother of this world, Niangniang Lu, and her fiancé, Xiao Jing. She and Xiao Jing go through many twists and turns and dangers before finally coming together. Xiao Jing: The male protagonist, the prince of the Great Zhou Kingdom and Lu Zhiqing's fiancé. He is a handsome, smart, decisive and domineering man who has a deep love for Lu Zhiqing. He unveils Lu Zhiqing's human skin mask during a dance on a rainy night and discovers her true appearance.