Mainly money and cards, as well as visas and passports, should be put together, and they need to be submitted directly when entering the country. You don't need to bring a domestic ID card to go abroad. This is a useless extra project, but if something goes wrong, it will be troublesome. Clothes should be neat; You can bring some common, interesting and inexpensive items. Because foreign countries can't accept gifts casually, expensive things are not good. And the checked suitcase may be lost, so be sure to take valuables with you. Two pairs of shoes and a pair of slippers in case there are no slippers abroad (the hotel does not provide slippers), plus toiletries. If you are a girl, you should not have too many skin care products in your carry-on bag, and the total amount you can carry is roughly 100 ml. More words are put in the checked baggage.