Moldy, can't eat. You can still eat inside when you go out on the first floor. This is the beginning of mildew. When kneading dough, it will occupy the invisible mold on the table. Although the refrigerator temperature is low, some molds can reproduce and grow at low temperature (especially with plastic wrap), especially in summer. The dough has not been treated at high temperature, and some molds are not killed, which will quickly multiply to form small black spots. After a long time, it will swell and grow gray-green pili. When the black spots on the surface are very small, it will not affect the inside of the dough. It can be used after removing black spots, but it is not used in many cases. Many molds are carcinogens, so don't lose big because of small. If you don't eat noodles right away or can't finish them, you can put them in the freezer for freezing. When you want to eat, take it out early and thaw it or put it in the microwave oven, which will not affect the texture and taste of noodles.