What do foreigners mean by fr?

The fr spoken by foreigners may have two meanings, depending on the context:

1, fr is short for legal size.

2.fr is the abbreviation of father, which means "father". Foreigners, commonly known as "foreigners", refer to people who do not have the nationality of one country but have the nationality of another country, or as a general term for one country to another. People without the nationality of that country sometimes include stateless people. Starting from the principle of national sovereignty, the state enjoys territorial advantages over all people and things within its territory, and foreigners are no exception. As soon as foreigners enter the territory of a country, they are under the territorial advantage of that country, subject to the jurisdiction of the host country and abide by the laws and regulations of the host country. The host country should protect the life and property safety and legitimate rights and interests of foreigners.