How long does it take to get a visa before going abroad? Is it okay if I have to leave temporarily after I get my visa?

1. The visa has a certain validity period, which varies from country to country. Refers to the time limit for the holder to be allowed to enter the country from the date of issuance of the visa. After this period, the visa will be invalid. Generally, countries issue entry visas valid for 3 months, while some countries issue entry visas valid for 1 month. Some countries have strict restrictions on the validity of visas, such as Germany, which only issues visas according to the date of application. Transit visas are generally valid for a long time.

2. you can not go to the visa if you have something temporary.

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 (such as immigration bureau or its embassy or consulate abroad) to approve the entry of foreign citizens.

Reference link: Visa- Baidu encyclopedia