How are Chinese characters written?

The word "Guo" in Oracle Bone Inscriptions consists of "Ge+Kou", which means "army and population". It can be understood as: the population constitutes the army, and the army defends the population. This is the country. In inscriptions on bronze, official script and regular script, there is an extra "Chu" around the word "Guo", indicating that there is a border around the country; The word "country" in official script and regular script has been added with "one" to mean "land". This constitutes a complete country.