1, the root vegetable itself is very difficult to preserve, generally as much as you eat, if you add preservatives, although it will take a little longer, it will destroy the nutritional value of the thing itself, and if you eat it for a long time, it may cause unnecessary harm to your body.
2, the best way is to wash it, dry it, and eat it by pickling. If you want to eat it in a few days, you can wrap it in a newspaper and put it in the refrigerator.