1, depending on whether it's cold or hot, it's okay if some salty dishes are not put in the refrigerator in winter, but it's best to eat them as soon as possible. If it's hot, take an insurance bag or plastic wrap to seal the dishes and put them in the refrigerator.

2, heating, if there is a microwave oven, it will be more convenient. Use a container that can be microwave, put it in and heat it. If there is no microwave oven, pour it into the pot, add some water and heat it.