I want to travel to Korea. I want to ask some small questions. Please answer them. Thank you!

1. You need to bring an adapter. You can buy it in China or Korean hardware stores, which is very convenient.

There is a limit to milliliter. There are special packaging bags at the airport. Just ask for it directly If you check it in your luggage, there is no limit, but you'd better not take too much. It's not safe after all.

3. Hotels in Korea provide toothbrushes or something. You don't need to bring your own, but you should bring your own hygiene. Don't worry.