The suitable storage temperature for vegetables such as Chinese cabbage, celery, onions, and carrots is around 0℃. The suitable storage temperature for vegetables such as cucumbers, eggplants, and tomatoes is between 7.2℃ and 10℃. Pumpkins are suitable for storage at temperatures above 10℃. From this, it can be seen that many vegetables are not suitable for storage in the refrigerator, otherwise it will not only cause their surface to discolor, but also affect their internal quality. For vegetables like tomatoes and cucumbers, with a minimum suitable temperature of 7.2℃, although they can be kept fresh in the refrigerator, they should only be stored for a maximum of 2-3 days. Bananas are tropical fruits and their suitable storage temperature is around 12℃, while the temperature of a refrigerator's fresh food compartment is generally 0-4℃. Therefore, if bananas are placed in the refrigerator, they are very susceptible to chilling injury, which can reduce their nutritional value and even cause them to rot.