Second, the visa; A visa is your passport to go abroad. If the travel date of the ticket you bought is not within the validity period, you can't board the plane, and even if you go abroad without a visa, you will be sent back to China.
Third, the student ID card; The student ID card can prove that you are an international student. If you have a student ID card of an international student when you buy a ticket, different airlines have different policies for international students. If you have a student ID card, you can enjoy these benefits.
Fourth, the identity card; Although the ID card is useless abroad, if you choose the ID card information when you buy the air ticket, you still have to rely on the ID card to get the air ticket.
Legal basis: Article 14 of the Law of the People's Republic of China on Resident Identity Cards is under any of the following circumstances, citizens shall show their resident identity cards to prove their identity:
(a) the registered items of permanent residence have changed;
(2) military service registration;
(3) Marriage registration and adoption registration;
(4) Going through exit formalities;
(5) Other circumstances in which it is necessary to prove identity with a resident ID card as stipulated by laws and administrative regulations.
A citizen who has not obtained a resident identity card in accordance with the provisions of this Law may, when engaging in the relevant activities specified in the preceding paragraph, use other means of proof that meet the requirements of the state to prove his identity.
Regulations of the people's Republic of China on passports and visas
Article 1 The passport of the People's Republic of China is an identity document issued to China citizens to go abroad.
Passports are divided into diplomatic passports, official passports and ordinary passports (ordinary passports are divided into ordinary passports for business and ordinary passports for personal reasons). The passport issuing authority may also issue other documents instead of passports when necessary.
Article 2 The People's Republic of China (PRC) visa is a permit for China citizens and foreigners to leave, enter and transit.
Visa is divided into: diplomatic visa, official visa and ordinary visa.
Article 8 Ordinary passports shall be issued to the following persons:
(1) Ordinary passports are issued to graduate students, advanced students, overseas students, workers and seafarers employed by foreign companies;
(two) ordinary passports for private purposes are issued to citizens of China who go abroad for private purposes and citizens of China who live abroad;
(3) Persons who the passport issuing authority deems it necessary to issue ordinary passports. Chapter III Issuance of Visa