Doctor and Patient
Dr. Ju was a famous physician of the state of Qin. He had cut a tumor for Emperor Xuanwang and healed haemorrhoids for Emperor.
A certain Mr. Zhang who was afflicted with a sore back asked the physician to treat it.
"I will not regard it as my back any longer. Do whatever you think fit with it!" he said.
Given a free hand, the physician cured his patient in no time.
There is no doubt that Dr. Ju was well versed in his craft, but the fact that Zhang put himself entirely in the doctor's hands also accounts for his prompt recovery.