In reality, the names of various countries in novels, for example, China was usually called Hua...

Answer 1

Different novels may have different names for different countries, depending on the cultural background of the novel and the author's personal preferences. The following are some common names for different countries in novels:

China: Generally known as "Huaxia","Central Plains","World" and so on.
Japan: Usually called "Japan","Japan","Japan", etc.
The United States: generally known as "Western","democratic country","world lighthouse" and so on.
South Korea: commonly known as "South Korea","North Korea","South Korea" and so on.
France: Generally known as "France","King of Europe","France" and so on.
United Kingdom: Generally known as "England","United Kingdom","Great Britain" and so on.
Germany: Generally known as "Germany","Germany","World Factory" and so on.

Of course, these were just some common examples. In fact, different authors and novels from different cultural backgrounds might have different names for different countries.