April. Leigong fungus, namely Nostoc commune, also known as Nostoc commune, has strong vitality, and can quickly absorb water and expand and grow after rain. Leigong bacteria like water very much, so Leigong bacteria are the most after the rain. April in Jining, Shandong Province is a rainy season, so Leigong bacteria in Jining, Shandong Province are picked in April.

Leigong bacteria is cold and slippery, and has the effect of clearing away heat and toxic materials. It can be used orally and externally to help treat burns, scalds, sores and swelling, and also has certain curative effects on diseases such as red eyes, night blindness and proctoptosis.