The word "Guo" has an internal and external structure, with the word "Yu" inside and a national character box outside.
China and modern Chinese standardize the first-class characters (commonly used words), and the pronunciation of Putonghua is guó, which was first seen in the bronze inscriptions in the early Western Zhou Dynasty and belongs to the knowing words in the six books. The basic meaning of "country" is a political power with land, people and sovereignty, such as a country; The extended meaning refers to China, such as domestic products.
In daily use, "country" is often used as a noun to indicate a territory, such as a country.