Rebirth 01: AI Miracle Doctor

Old man: "Young man, I have a medical certificate, a completely healthy heart, and a pen. Which one did you throw away?" Lei Ling's eyes lit up: "No need to ask, it must be a pen! What is a doctor's certificate? Only dogs can be doctors!" The old man was furious: "You fart, all the pens in the department are in your drawer! Now I will punish you to go back twenty-five years ago and become a qualified medical expert from scratch."