Bencao Index https://bencaoindex.com/ https://bencaoindex.com/herbs/yu-qian-cha/ Free to use and republish with visible attribution and a link back to the source page. The catalogue is a reference work and is knowingly incomplete; nothing in it is medical advice. <a href="https://bencaoindex.com/herbs/yu-qian-cha/">Bencao Index</a> yŭ qián chá 雨前茶 Folium Theae tea picked between Clear Brightness and Grain Rains , i.e., between April 5th and April 20th