I'm Just a Mortal Doctor

What, even if you have lost your cultivation, you won't be able to treat quacks! Well, young man, if you have kidney deficiency, you need to see a doctor more. You can't control this disease, so let me do it. Alas, auntie, I see that you are in a daze, and you must be sick. Let me help you cure it. This is the story of a mortal with an invincible medical system who lives in the world of immortality.