Passport: If you need to travel abroad, a passport is essential. Please make sure that your passport is valid and there are enough blank pages for issuing visas.
2. Visa: If you need to go to some countries, you may need to apply for a visa. Please know in advance the visa requirements of the destination country for your nationality, and make sure that you have obtained all the necessary visas before departure.
3. ID card: For domestic travel, you need to bring a valid ID card to board the plane for identity verification.
4. Household registration book, foreigner temporary id card or residence certificate: If you are a foreigner living or working in China, you may need to prepare these certificates as identification.
5. Air ticket and boarding pass: You need to bring a valid air ticket and the corresponding boarding pass to enter the airport for boarding.
6. Military officer's card or police officer's card: If you are a soldier or policeman, you may need to carry these documents to verify your identity at airports and airlines.
In addition, it is necessary to confirm the entry requirements of the destination country before purchasing tickets, such as whether it is necessary to conduct nucleic acid testing or health code. Please check the requirements of airlines and airports in advance to ensure that you are fully prepared and meet the requirements.