A female, 70 years old, was hospitalized for half a month with intolerable pain between the two medial scapulae at around 1:00 pm every night, which lasted for about 2 hours. There was no positive finding on examination. The tongue is light red, with thin white fur and a stringent pulse. Gui Zhi 10, Sheng Bai Shao 10, Qiang Wu 10, Ge Gen 60, Su Mu 10, Chai Hu 10, Scutellaria Baicalensis 10, Fa Xia 10, and Roasted Licorice 10. 5 doses and the disease was lost. Concept: The area between the inner part of the two scapulae belongs to the Sun meridian. Therefore, Gui Zhi Tang is used. Timing the onset of disease and harmonizing yin and yang, with the best effect of Xiao Chai Hu Tang.