The heroine (Su Qingyuan), a modern top doctor of integrated traditional Chinese and Western medicine + toxicology expert, accidentally time-traveled (fusion and rebirth) into the "fake daughter" of the Dajing Dynasty. The original owner was abducted and left in the countryside, and was only brought back to the mansion half a year ago. Because of her cowardice and lack of understanding of the rules, she was suppressed by her sister (the fake daughter Su Yurou) and looked down upon by everyone in the mansion. Later, she was designed to "accidentally" fall into the water, and the heroine's soul came back. The heroine has her own knowledge base of modern medical skills and toxicology. She is good at silver needles, decoctions, and poison techniques. She has a calm and decisive personality, and must retaliate for her anger. She is neither a virgin nor a lover. She takes medical skills as the basis of her life. From fighting in the house to the whirlpool of the court, she finally realizes the pattern of "with medical skills in hand, I have the world"