It Is Prohibited to Cross This County

Shen Yan put down his pen and glanced at the half-copied summer tax book. "Who's out there?" The servant Chen Qi replied: "The guys from Juxian Tower said that their shopkeeper is crazy." "Go crazy and go to the doctor." "I looked for him. The shopkeeper kicked the doctor out and said he didn't have a medical license." Shen Yan was silent for a moment. "What is a license?" "I don't know." Chen Qi thought for a moment, "Maybe it's just medicine."