There is no scientific basis to say that you cannot eat fungus at night. Mullein is a commonly consumed mushroom food with high nutritional value, containing about 10.6 grams of protein, 0.2 grams of fat, 65.5 grams of carbohydrates and 7 grams of dietary fiber per 100 grams. Wood fungus contains wood fungus gum, which can promote intestinal peristalsis and help excrete lipids in the intestine, as well as reduce the body’s cholesterol and triglyceride content, thus playing a role in preventing and relieving constipation. Fresh fungus contains porphyrin-like photosensitive substances that are sensitive to light. After consumption, such substances may enter the human epidermal cells with blood circulation, which may easily induce dermatitis, skin itching, redness and swelling after sunlight exposure, and in severe cases, even pimples, blisters, edema of the throat mucosa, lacrimation, general weakness, difficulty in breathing and other toxic symptoms. Therefore, it is not recommended to eat fresh fungus. The basic daily consumption is dried fungus, which decomposes most of the porphyrins in the process of exposure to sunlight. Soaking the fungus in warm or cold water before consumption and then cooking the fungus cooked to perfection will make the toxins disappear. However, it is worth noting that people with chronic enteritis, allergy to fungus, bleeding tendency or blood clotting disorder should not consume fungus.