2. After the food is put in the refrigerator, the low temperature does not freeze the bacteria to death, but inhibits their reproduction. The bacteria are still alive and will grow rapidly at room temperature after being taken out. Consumers are advised to buy duck neck products in vacuum packaging or modified atmosphere packaging (locking fresh-keeping boxes) as much as possible, and buy less or no bulk products. Due to the short shelf life of bulk duck neck and locked fresh duck neck, consumers should pay attention to eating it as soon as possible after opening it during the shelf life. Bulk duck neck should be reheated as much as possible before eating, and consumers are not advised to eat too much often or at one time.