Lycium chinense, also known as auricularia auricula, lichen, auricularia auricula, Geotrichum candidum, Leigong mushroom, Polygonum cuspidatum, sweet potato peel, etc., is a combination of fungi and algae, which generally grows in dark and humid places and often appears on unpolluted mountain grasslands after heavy rain. Dark black, a bit like a soft black fungus. Physalis alkekengi is rich in protein, vitamins and minerals such as phosphorus, zinc and calcium.