Zhenguan: I, the Son of the Duke, Just Want to Farm

I dress up as the son of a prince and live as a rich man in the countryside. After rescuing a girl who fell into the water, her sister looked at me in a wrong way. Her father came to the door and brought a patient with him. I casually made a prescription: "Three times a day, avoid greasy and spicy food." The other party shouted: "This medicine can cure my stubborn disease in the Tang Dynasty!" Only then did I know that the girl I rescued was Princess Changle.