Ephedra and Gui Zhi Tang disperses wind-cold in the blood and is composed of ephedra, willow branches, cinnamon sticks, and scutellaria. According to “Young and Young Integration”, Ephedra and Gui Zhi Tang is composed of ephedra, willow branches, cinnamon sticks, scutellaria, peach kernel, roasted licorice, large raw earth, fresh saffron, and scallion white. It can disperse wind-cold in the blood. It is used for night malaria (malaria occurs at night), when there is evil in the Blood (which is the deepest stage or location of the disease among the four periods of Wei Qi and Ying Blood in warm diseases). Malaria occurs at night, when evil qi enters the Yin and Blood. Therefore, in Ephedra and Gui Zhi Tang, Ephedra and Gui Zhi are used to disperse wind-cold, Scutellaria baicalensis is used to clear and excrete ambient heat, and peach kernel is used to draw medicine into the blood to disperse blood and slow down the liver. The combination of all the medicines plays the role of dispersing wind-cold in the blood. It is recommended to use the medicine under the guidance of a doctor to avoid delaying the condition.