Because it looks like a three-character figure. According to the query of mushroom shell network, Sanba mushroom is named because its shape is umbrella-shaped like a figure of eight, and the mushroom slices are cracked into three characters. Sanba Mushroom, also known as Agaricus Campestris, Termitomyces, Coprinus Domesticus, Coprinus Domesticus, Coprinus Domesticus, Coprinus Domesticus, Coprinus Domesticus, Termitomo Reticulatus, Termitomo Umbrella, Coprinus Domesticus, Summer Solstice Mushroom, Summer Solstice Mushroom and Santang Mushroom. It is one of the four famous fungi, and it is a treasure among edible wild fungi. The meat of Sanba mushroom is thick and fat, with white filaments and fresh, sweet and crisp taste. It contains essential amino acids, protein, fat, various vitamins, calcium, phosphorus, xanthic acid and other substances.