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Since its founding, the Goguryeo Kingdom has shown a strong aggressiveness and expansionism, constantly waging annexation wars against the Eastern Buyeo Kingdom, the Northern Buyeo Kingdom, and other surrounding small tribes.

By the end of the Western Han Dynasty, when Wang Mang usurped the throne, Goguryeo had developed into a huge country spanning both sides of the Yalu River, thousands of miles away, and took advantage of the civil strife of the Han Dynasty to extend its claws to the official rule of the Han Dynasty.

During the Guangwu period of the Eastern Han Dynasty, the king of Goguryeo once sent troops to take the initiative to attack the Han Dynasty's Lelang County (Zhenfan Lintun County was merged into Lelang County less than 20 years after its establishment) and Xuansu County, getting rid of the rule of the Han Dynasty in one fell swoop.

After Emperor Guangwu of the Han Dynasty swept away the troubled times and established the Eastern Han Dynasty, he sent troops to recover Lelang County, and agreed with Goguryeo that the area south of Sashui (Cheongcheon River) on the Korean Peninsula belonged to Han soil, and Goguryeo was not allowed to touch it, but at the same time acquiesced to Goguryeo to attack this vast area north of Sashui and south of the Yalu River.

This was the first head-to-head confrontation between the Central Plains Dynasty and Goguryeo, and the Han Dynasty achieved a military victory, but did not discourage Goguryeo's expansionist ambitions.

At the end of the Eastern Han Dynasty and even the Three Kingdoms period of the Central Plains, the Liaodong region of the Han Dynasty was controlled by the local tyrant Gongsun family.

The Gongsun family repeatedly attacked Goguryeo over the course of several decades and gained the upper hand until Cao Wei's general Sima Yi led an army to conquer Liaodong and sweep away Gongsun Yuan, and the king of Goguryeo saw that he had a chance to turn over. Hurriedly formed an alliance with Sima Yi. Attack Gongsun Yuan together.

Sima Yi successfully eliminated the Gongsun clan. Liaodong County returned to the hands of the Central Plains Dynasty, and after the Wei army retreated, Goguryeo looked at the original Liaodong hometown of the Gongsun clan, just like a hungry man staring at a big fat meat, and his heart was moved, and finally he couldn't help but take the initiative to send troops to attack Liaodong.

At that time, Biqiu Jian, who was the assassin of Youzhou, led tens of thousands of infantry cavalry and went out of Liaodong to attack Goguryeo. How could Goguryeo, which even Gongsun Yuan couldn't beat, be able to resist the male soldiers from the Central Plains. After several battles, the elite were lost, and even the capital Marudu Castle (on the Marudu Mountain south of present-day Ji'an, Jilin) was captured.

At that time, the king of Dongchuan of Goguryeo was chased all the way from Liaodong to the East China Sea of Korea like a rabbit being chased, and later fled to the Sushen area in the coastal region of today's Russia, which was a completely wild place, and finally the king of Dongchuan died depressed in the process of fleeing.

Biqiu Jian chased him all the way to the sea, and then carved the stone and returned. For more than 50 years after that, Goguryeo did not dare to think anything wrong about Liaodong anymore. Goguryeo's second collision with the Central Plains Dynasty ended in a fiasco that nearly wiped out the country.

After breaking through the capital of Maru, he heard the news of the death of the king of Dongchuan. Thinking that Goguryeo had perished, he withdrew to the country.

Goguryeo was quietly restored and developed after seventy years. They also rebuilt the mountain fortress of Marudu, and they expanded their strength to the Han River area on the Korean Peninsula, and fought against Baekje and Silla, which were beginning to rise in the southern part of the peninsula at this time.

At that time, King Micheon of Goguryeo also took advantage of the chaos in the Central Plains at the end of the Jin Dynasty, and the imperial court was no longer able to govern the Liaodong area, and annexed Lelang and Xuansu counties in one fell swoop, controlling half of Liaodong.

Just when the Mikawa Wang Zhi was complacent and wanted to further control the entire Liaodong and then plot against the Central Plains, they were hit by a blow in the head, and this time they met the opponent of the Xianbei Murong clan of the fierce Former Yan Empire.

Needless to say, the history of the Murong clan is known to the world that they later entered the Central Plains and established a huge Qianyan Empire, but at this time, the Xianbei Murong clan was just a nomadic tribe that originated in the Liaodong area, but its strength was still far stronger than that of Goguryeo, which was considered to be very strong.

Not afraid of not knowing the goods, but afraid of comparing the goods, Goguryeo has been defeated and defeated again and again with Murong Xianbei for more than 20 years, and is determined to infiltrate Liaodong.

After the death of King Mikawa, his son, King Yuan, inherited the spirit of the kings of Goguryeo who could not be killed, and continued to harass Liaodong, hoping that the Xianbei people would be like the Han people, and they would not tire of it and leave.

After Murong Xianbei successfully defeated the Duan clan and the Yuwen clan, who were also members of the Xianbei tribe, he also faced a problem of development direction, whether to enter the Central Plains to the south to join the ranks of the struggle for hegemony, or to the east to destroy the Goguryeo secession party, which became a difficult problem in front of Murong Xianbei's leader Murong Jun at that time.

The most arrogant Xianbei people still chose to go south, but before that, they launched a decisive offensive against Goguryeo in order to ensure peace in the rear.

Murong Xianbei's troops were divided into two routes, one was held against the main force of Goguryeo in the area of the Yalu River, and the other was led by the famous general Murong Chui, who was only fourteen years old at the time, and the troops marched on a small road, raiding the capital of Goguryeo Pyongyang (moved here after the defeat of Marudu), capturing the body of King Micheon (who was dead at this time) and the Empress Dowager Zhou of Goguryeo, and swaggering all the way back to Liaodong.

Goguryeo suffered a blow comparable to the last time when it almost destroyed the country, and even suffered the shame that even the corpse of the former king and the queen mother could not protect, and the house leak happened to rain overnight, and after Baekje heard that Goguryeo was beaten violently by Qianyan, in the spirit of beating the water dog while you were sick, he poured all the troops of the whole country north and surrounded the city of Pyongyang.

This time, Goguryeo was no longer able to resist the Baekje army, so he had to retreat to the capital, and the original king of Guguguwon was also killed by an arrow while going out of the city, but his subordinates were inspired by the king's death in battle and rose up to fight, and finally repelled the Baekje army. However, after the war, Baekje on the Korean Peninsula became the first power, and Goguryeo could only submit to Baekje in name.

After that, Goguryeo swallowed his anger, and two generations of Goguryeo kings could only secretly accumulate strength, and after stinging for decades, he finally ushered in a generation of wise monarchs Hao Taiwang (also known as the king of Guangkaitu, listen to this name and know that this guy is a shrunken version of the Han Wu Emperor), this person can also be called a generation of heroes, and after coming to power, he actively reorganized his arms and prepared for a shame.

After more than ten years of war, he finally defeated Baekje and regained the hegemony of the Korean Peninsula, and then turned his attention to Liaodong.

At that time, the Houyan Empire established by Murong Chui passed to Murong Bao's hands, and fought with the Good King many times, winning less and losing more, but on the whole, the two sides were only in the Liaoshui area, and the Houhou King occupied Liaodong east of Liaoshui, while Houyan firmly controlled Liaoxi.

After conquering Liaodong, King Haotai continued to conquer Baekje and Silla in the south, and the predecessor of Japan, the Wa Kingdom, also began to have ideas about the Korean Peninsula, and during this period, he crossed the sea on a large scale to attack Baekje, forcibly turning Baekje into his own colony and vassal.

King Haotae fought several battles with the Japanese army, and finally expelled the Japanese army, and became the suzerainty of Baekje and Silla, nominally unifying the Korean Peninsula.

King Hao Tae finally fulfilled the wish that the Goguryeo monarchs had wanted to achieve for hundreds of years, and King Hao Tae (King Gwanggaetu) undoubtedly became the greatest generation of emperors in the history of Goguryeo, who died at the age of 39 and later began to spread in Korea with 39 moves in taekwondo, just to commemorate this great and legendary generation of emperors.

After the death of King Haotae, his son, King Gao Lian, of Changshou, knew that he did not have the skills of a father, so he turned his attention to consolidating internal affairs, managing the Korean Peninsula, and moving the capital from Marudu in Liaodong back to Pyongyang.

In 409 AD, after Houyan was broken by the Northern Wei Dynasty, the homeland of Murong Xianbei in the western Liaoxi area was established by Murong Xi, the clan of the Yan State, and the small country of Northern Yan was established, and the capital Longcheng was built.

At the beginning of the founding of the Northern Wei Dynasty, a generation of great emperors Tuoba Tao conquered the Quartet, and the Northern Yan could not resist, and the last emperor Feng Hong led 30,000 or 40,000 soldiers and civilians to cross the Liaoshui River and move into Goguryeo, and the Northern Yan perished.

After Feng Hong arrived in Goguryeo, he was still restless, and wanted to repeat the history of the occupation of Nestle by the Dove when Wei Man entered Korea, on the one hand, he sent people (Feng An's uncle) to Liu Song of the Southern Dynasty to seek support, and on the other hand, he was ready to usurp the throne of Goguryeo with the people in his hands. (To be continued......)