What is a visa?

Visa is the annotation and seal of the sovereign organ of a country on the passport or other travel documents held by its own or foreign citizens to show that they are allowed to enter or leave its own territory or pass through it. It can also be said that it is an endorsement certificate issued to them. Generally speaking, a visa is a document issued by a country's entry-exit administration department (such as immigration bureau or its embassy or consulate abroad) to express approval to foreign citizens.

According to the principles of international law, any sovereign country has the right to decide whether to allow foreigners to enter or leave the country, and to issue visas, refuse to issue visas or announce the cancellation of visas already issued according to its own laws.

The visa is usually attached to the passport or other international travel documents held by the applicant. Under special circumstances, valid passports or other international travel documents can be written on a separate sheet. With the progress of science and technology, some countries began to issue electronic visas and biological visas, which greatly enhanced the anti-counterfeiting function of visas.

Extended data

According to the Regulations on the Entry and Exit of People and Foreigners in China, foreigners must apply for a Chinese visa to travel to China.

Foreigners must apply for and complete a Chinese visa before entering China, except in cases where visas are exempted according to relevant agreements and regulations.

Before you go to China, you should check whether the visa is valid. If the visa expires or the number of entry times is insufficient, you must re-apply for a visa.

According to the routine of entry and exit, it can be divided into: diplomatic visa, official visa, immigrant visa, non-immigrant visa, courtesy visa, tourist visa, work visa, study visa, business visa and family visa. Every country is different.

According to the length of time, it is divided into: long-term visa and short-term visa. The concept of a long-term visa is to stay in the destination country for more than 3 months. It usually takes a long time to apply for a long-term visa, regardless of the purpose of the visit. A visa that stays in the destination country for no more than 3 months is called a short-term visa, and it takes a relatively short time to apply for a short-term visa.

Baidu encyclopedia-visa

Baidu encyclopedia-China visa