If you want to create a sculpture or keepsake, you’ll need to let your clay dry. This kind of clay dies out pretty quickly, but it’s best to leave it untouched for at least 2 days to make sure it’s fully dry. You can preserve your clay for a few weeks by keeping it in an airtight container. Make sure you leave the clay in the container whenever you’re not playing with it, as it will dry a little bit whenever it’s exposed to the air. For instance, you can use a plastic bag with a zipper or a Tupperware container. For extra longevity, place the clay in the refrigerator.

How would you rephrase that briefly using Vietnamese?
Hong khô đất sét khoảng 2 ngày để bảo quản thành phẩm. Bảo quản đất sét bằng đồ đựng kín khi không sử dụng.