Edible fungus (jùn), and in teaching are accustomed to read edible fungus (jūn). Xinhua Dictionary, found that "fungus" has two pronunciations: one is when it refers to bacteria, fungi, slime molds and other microorganisms, read a jūn. For example, Escherichia coli, Staphylococcus aureus, Helicobacter, lactobacillus (bacteria), yeast (fungi), Penicillium (fungi), sterilization, sterilization, germs, germs, and so on. should all be pronounced with one sound. Secondly, when "菌" means "mycorrhizal fungus" in fungi, it should be pronounced in four tones jùn.