There are five ways to buy oyster meat to keep it fresh:

1. You can keep it for a day or two by washing it with water, putting it in a basin of water and putting a few drops of sesame oil.

2. For long term preservation, you need to cook it in the shell, then take out the meat, wrap it in a plastic bag and put it in the freezer.

3. Preserve in the shell. Oysters can survive even at normal room temperature.

4. Take the meat out and preserve it. If the refrigerator has a zero-degree freshness feature, it should stay fresh for about 5 days. Usually refrigerate for 3 days.

5. If freezing is called chilling, put the oysters in a crisper and freeze them. The oysters themselves will have soup, don't pour it out. Freeze them together to keep them fresh. Also, freezing in the refrigerator is not quick-freezing per se, so don't freeze them for more than six months or the flavor will be affected.

The most common method is to freeze them in the refrigerator, which is a long-term preservation method. But if you only need to keep it for a day or two, in addition to freezing it, you can also try to wash the oysters you bought with water and put them in a basin with a few drops of sesame oil.

But oysters are best eaten when they are still alive after purchase, so you can get rich nutrients and a fresher flavor.