What does Fuyu country mean?

Fuyu country, also known as Fuyu, is a Northeast Asian country established by Fuyu people, an ancient ethnic group living in the northeast of China. Fuyu lives in the northeast of China today, where there is abundant food and surplus food. Fuyu Kingdom was founded in the 2nd century, and was destroyed by Koguryo in 494, which lasted for about 700 years. Koguryo and Baekje in later generations are the continuation of Fuyu country. The regime on the Korean peninsula believes that Fuyu people are one of the ancestors of Koreans/Koreans today. Japanese scholars' theory of riding to conquer dynasties also thinks that Fuyu and Koguryo may be the origin of the Japanese nation.