Zhang, male, 50 years old. In early summer of 1973, he developed a low-grade fever and was treated in Loude without success, then returned to Jinan. Western medical examinations could not identify the cause or the lesion. He was only given saline and hormones daily, but after two months of treatment, there was still no improvement. A doctor at the hospital invited a consultation.

The patient's diet and bowel movements were relatively normal, but the pulse manifestation was slightly wiry and thin, accompanied by a slight headache. The "Treatise on Cold Damage Diseases" states: "In cold damage diseases, a wiry and thin pulse with headache and fever belongs to shaoyang." Therefore, the original formula of Minor Bupleurum Decoction was prescribed, with Bupleurum used at 24g per dose. After taking two doses, the low fever completely subsided, and the patient felt comfortable all over. Some doctors at the hospital still did not believe it. As a result, after three days, the patient recovered and was able to return to work.