1. Vegetable leaf moisture: There may be water residue on mustard leaves. If placed in a clean vegetable basket, the leaves at the bottom will be exposed to moisture, which will increase the chances of bacteria breeding.

2. Bacterial reproduction: Mustard may carry some bacteria or microorganisms and put them in a clean vegetable basket. Without proper ventilation and humidity management, these bacteria will multiply on the leaves of vegetables, increasing the risk of food pollution.

3. Cross-infection: Clean baskets are used to store crisp vegetables, such as lettuce, which are usually eaten raw. If cabbage and lettuce are put in the same basket, bacteria may spread from cabbage to lettuce, increasing the possibility of cross-contamination of food.

In order to avoid these hidden dangers, it is suggested that Chinese cabbage be stored separately, rather than mixed with other vegetables. At the same time, in the container where vegetables are placed, it should be kept clean and cleaned regularly to reduce the chances of bacterial growth.