Chi Weitang discovered something was wrong after extracting the patient's teeth. Why was the newly extracted tooth rotten? After a series of self-examinations, he felt that he had made a false alarm. He had just walked out of the clinic door, but unexpectedly it had just begun... Why was the noisy waiting hall empty, and why did his brother, who should have been waiting for him at the agreed place, show up in the clinic again!
Concept: Life is full of surprises