The middle-aged man opened the door and came in to get a consultation for his father. He softly said, "My dad has had headaches recently. Please take a look at him."

Wang Yao looked at the old man carefully. His complexion was dull. His eyes were dim, and his breathing was irregular.

"Have you recently stayed in a hospital?" he asked.

"Oh, yes I have because of thrombus," the old man said.

"How long was it? A month?" Wang Yao asked.

"Slightly more than a month," the old man said.

Wang Yao checked his pulse and said, "You haven't had a good rest lately. Can you sleep at night?"

"No. Because the headaches are so severe, I cannot sleep well," the old man said.

The middle-aged man had gone to the big hospital with his father, but the effect had not been ideal. A friend from the province had told him there was a doctor in the area who specialized in treating headaches. After considering his options, especially since it was hundreds of miles away and his father did not travel well, h