Emperor Wen of Sui once sent 300,000 troops to attack both water and land, and launched a large-scale counterattack against Goryeo. Later, due to rain, floods and storms, he encountered another epidemic and was forced to return to his post. Gao Yuan expressed his guilt and Empero

The war to invade Goryeo launched by Emperor Yang of Sui.

599 (the 19th year of Kaihuang) Gao Yuan, the King of Goryeo, invaded the Sui territory in western Liaoning. Emperor Wen of Sui once sent 300,000 troops to attack both water and land, and launched a large-scale counterattack against Goryeo. Later, due to rain, floods and storms, he encountered another epidemic and was forced to return to his post. Gao Yuan expressed his guilt and Emperor Wen treated him as before.

After Emperor Yang of Sui ascended the throne, he was very proud of his achievements. After being encouraged by Pei Ju and others, he decided to invade Goryeo again. The Sui Dynasty mocked Gao Yuan several times, but Gao Yuan refused to obey. Emperor Yang issued an edict in February 611 on this grounds. The Sui Dynasty first built 300 warships in Laizhou, and then collected rice from all over the country, which was stored in western Liaoning. He also issued an edict to conquer the troops from all over the world and gathered in Zhuo County to be launched.

The war has not yet begun, and the harassment has been severe. Shipbuilders stood in the water day and night, daring to rest, and four or five of the dead were dead. The villagers transporting grain and the soldiers they were conscripted were still on the way, and there were often hundreds of thousands of people, and the dead were sleeping together, and the smell was filled with foul roads.

The vast rural farming crops are lost, the fields are deserted, and the world is full of scattered. In the first month of 612, the Sui Dynasty raised 1.13 million soldiers, claiming to be 2 million, and marched into Liaodong in large numbers. The teams were successively formed, covering 960 miles.

came to the nursery school to lead the navy, floating in the sea from Laizhou, heading straight to Pyongyang, winning first and then losing, and dared not stay to support the army on the land. The land army arrived 30 miles away from Pyongyang. The military rations were about to be exhausted and the soldiers were exhausted and they could not fight again.

On the way to retreat, the Goryeo army surrounded and fought on all sides. After the Sashui battle, the Sui army was defeated. During the Liao Dynasty, there were 305,000 Sui troops, and there were only more than 2,700 people who returned to Liaodong City.

There are a lot of capital reserves and equipment, and they are lost. In April 613, the Sui army invaded Goryeo again and attacked Liaodong City for a long time.

Yang Xuanshen reported the news from China. Emperor Yang was very scared and secretly ordered the generals to return to the army. Military capital, equipment, and attacking tools were like hills and hills, and camps were blocked and blocked, and they were all abandoned. In February 614, Emperor Yang of Sui ordered the resurgence of the world's troops, keeping pace with all directions, and invading Goryeo for the third time. At that time, the world was in chaos and peasant uprisings were surging.

Soldiers conscripted by the Sui Dynasty. Most of them fail to reach the deadline. On the march, they fled one after another, and they were beheaded and provoked, but they still could not be stopped.

Goryeo has been struggling for many years and has become extremely disadvantageous. Gao Yuan then imprisoned the traitor of the Sui Dynasty and took the initiative to beg for peace. Emperor Yang of Sui took advantage of the situation to stop his troops and return to the country.

Later, Gao Yuan, the King of Goryeo was summoned to the court, but he still refused to follow. Emperor Yang tried to build a military force again. However, due to the rapid development of domestic uprising, the rule of the Sui Dynasty was already in danger and could no longer invade eastward.