1. Expose fresh folium Artemisiae Argyi to the sun, and the efficacy of folium Artemisiae Argyi will also be lost. So it is best to "sun" in the dark, which is often said to be dry in the shade. Firstly, drying fresh Artemisia argyi in the sun until there is no moisture on the surface;

2. Then put the wormwood in a ventilated and cool place to dry in the shade for a while, and then put it away for preservation.