According to the "Book of the Later Han Dynasty" volume 85 of the "Dongyi Liebiography": Fuyu country, thousands of miles north of Xuanfu. It is connected to Goguryeo in the south, Lulou in the east, Xianbei in the west, and weak water in the north. The place is 2,000 miles, and the land is also in Benhao. The location is equivalent to today's Jilin Province in China.

The origin of the Buyeo Kingdom (located in present-day Jilin, northern Liaoning) and the central part of Heilongjiang Province is roughly centered on the Fuyu Wangcheng (Jilin City), including Jilin City, Changchun City, Nong'an County, Songyuan City, Siping City, Baicheng City in Jilin Province, Changtu County in Liaoning Province, and Huanan County in Heilongjiang Province.

In ancient times, before the Qing Dynasty, the three northeastern provinces did not belong to the land of China, only after the Qing Dynasty entered the customs, it belonged, in the Han Dynasty, the three northeastern provinces were mainly occupied by the Xianbei people, Goguryeo, Buyeo and many other ethnic minorities in the north, and these places were barbarian lands, and the rulers at that time rarely expanded to these places. At that time, there were four ancient ethnic groups in Northeast China: the southern part of Northeast China was the ancient Shang (Han) lineage; the western part of the northeast is the Donghu ethnic group; The eastern part of the northeast is the Sushen clan; The central part of the Northeast is the Hao clan. "Changchun County Chronicles" records that during this period, the ancient people of Changchun were mostly Sushen people. According to the research of experts, during the Spring and Autumn Period and the Warring States Period more than 2,000 years ago, the population of Changchun was about 30,000. In ancient times, Changchun was also an area inhabited by ethnic minorities, and there were successively Sushen (Sushen South Branch), Fuyu Nationality, Goguryeo Nationality, Jin Ya Nationality, Khitan Nationality, Jurchen Nationality, Mongolian Nationality, Manchu Nationality living and breeding here, engaged in agricultural and animal husbandry production activities. After a long period of historical evolution, Changchun has developed from a single-ethnic area to a multi-ethnic area. The historical books "The Book of the Later Han Dynasty: The Biography of Dongwo" and "The Chronicles of the Three Kingdoms: The Biography along the Line" all record the activities of many ethnic groups such as the Zhan people in the Changchun area at that time. Even the Han Dynasty only accepted the Korean Peninsula as four counties, but it was constantly opposed by the local people, and its rule was extremely weak on the Korean Peninsula. The Japanese have a tradition of extreme worship of power, even in ancient times thousands of years ago, both the Xingtai Kingdom of Himiko and the rest of the small countries were extremely worshipful of power, and when they faced unknown power, they would choose to kneel, so it was not difficult to conquer the Japanese archipelago. In order to reduce the attrition of soldiers, Lu Xun took the militia of the four counties of the Japanese archipelago as the vanguard to open the way, and after conquering Donghao, he used the people of Donghao to consume the rest of the country.

And the most powerful of these four countries is Goguryeo, as long as Lu Xun destroys these four countries, he can pose a threat to Wei in the north, and then the entire Wei state will be encompassed by Chu State. [Goguryeo was a national regime that existed in Northeast China and the Korean Peninsula from the first century BC to the seventh century AD, and together with Baekje Silla, it was called the Three Kingdoms of Korea. Its people are mainly the people of the Sho and the Fuyu, and later absorbed some of the Ya people, the remnants of ancient Korea and the Samhan people. Due to the special geographical location of Goguryeo, and the fact that its territory spans today's China, South Korea, and ** countries, Goguryeo is claimed to be the original people of their own country. According to the "Records of the Three Kingdoms" and "The Remains of the Three Kingdoms", in 37 BC, the prince of Buyeo, Jumong, fled from Buyeo to Buyeo and established Goguryeo due to discord with other princes. Some scholars believe that Goguryeo was founded as early as the 2nd century BC. "Goguryeo" as a geographical term in 113 BC appeared in the Book of Han. Most historical records believe that Goguryeo was founded in 37 BC or the mid-1st century BCE, and that the Goguryeo people may have consisted of the Buyeo people who migrated to the region in the early days of their existence. The term "濊貊人" was not originally intended to refer to a definite ethnic entity, but was simply a general term for some ancient tribes that appeared in this particular region of the Northeast by ancient historians of the Central Plains. At the beginning of the establishment of Goguryeo, it was in a military confrontation with Buyeo for a long time. The relationship between Buyeo and the Central Plains Dynasty was very friendly, and in order to contain the aggressive Goguryeo regime in the growth period, the Central Plains and Buyeo often coordinated militarily to attack Goguryeo, and relevant records appear from time to time in the "Chronicles of the Three Kingdoms" and "Book of Han". 】

In this history, Goguryeo was a scourge to China, a fuel-inefficient lamp, and after the fall of the Han Dynasty, Liaodong County was controlled by warlike local tyrants. Goguryeo took the initiative to attack Liaodong County in an alliance with the newly established Cao Wei. After Cao Wei captured Liaodong, Goguryeo terminated its cooperation with Cao Wei and sent troops to attack eastern and western Liao. In 244, Cao Wei counterattacked and destroyed the castle of Marudu. King Dongcheon of Goguryeo fled to Wofu. Look at these two goods, they are weak, and they have to fight with the tiger, and after the plot, they still want to fight with the tiger, and in the end, they can only be injured. Cao Wei thought that Goguryeo had perished after destroying the capital of Maru, so he quickly evacuated. However, in just 70 years, Goguryeo rebuilt the city of Marudu and began to attack Liaodong, Lelang and Xuansu. With Goguryeo's advance on the Liaodong Peninsula, in 313, King Micheon of Goguryeo annexed the last county of the original Han Dynasty, Lelang County. Goguryeo entered from the northeast and controlled most of the northern part of the Korean Peninsula. It began to be in a fierce military confrontation with the ancient Korean states of Baekje and Silla, which formed the main body of modern Korea. Koreans call this period of history the "Three Kingdoms Era" in Korean history. However, these "Three Kingdoms" were originally just a few large tribal states with no sense of national identity with each other, and they were completely different from the situation when the Three Kingdoms of China during the Three Kingdoms period were all separated from the unified Han Dynasty and the people also had the same sense of nationality.

After that, this Goguryeo often fought with the two countries of Baekje Silla, and this Baekje and Goguryeo belonged to the same lineage, and they were both descendants of Buyeo, and this Silla was only a few villages in the late Eastern Han Dynasty and Ma Hong's time, and it had no combat power at all, and it only developed later. Although this Baekje country is now considered a country, under the attack of the Chu army, its defense line is like a piece of paper. Since 10 AD, Baekje has ruled over the lower Mahan tribes. According to the myth of the founding of Goguryeo, Baekje was founded by a group of Goguryeo people (Zhaosinu, Boiling Stream, Wonjo) and their people (Buyeo). The Goguryeo people formed the upper class when they arrived in the southern part of the Korean Peninsula, while the indigenous Mahan were the lower class of the state. In the "Chronicles of the Three Kingdoms", the king of Baekje said five times that he was from Jumong, and the royal family took Buyeo as his surname, and once changed the name of the country to Nambuyeo, and after the southern invasion of Goguryeo King Zhao, Baekje broke with Goguryeo and no longer reconciled.

Baekje was King Wenjo, the third son of Goguryeo founder Jumong, and was founded in 18 BC on the south bank of the Han River (present-day Namam City, South Korea). The founder of Goguryeo was King Jumong, the son of King Buyeo, who founded Goguryeo because he was excluded from other princes, and Baekje was the third son of King Wenjo of Jumong, the founder of Goguryeo. It can be seen from this that the child is the most following his father, the father's ambition is big, the child will not be small, the father can create a country, and the child can also create a country. At its peak, Baekje encompassed most of Western Korea (except for North and South Pyongan Provinces). The northernmost was to Pyongyang. Baekje was a maritime powerhouse that had political and trade relations with China and Japan by sea. In 660 AD, Baekje was destroyed by the combined forces of the Tang Dynasty and Silla. In the three years following its demise, Baekje launched a vigorous revival campaign, but ultimately failed.