Why did Toyotomi Hideyoshi invade North Korea?

After Toyotomi Hideyoshi basically unified Japan by force, in order to transfer internal contradictions, it launched aggression against North Korea in April 1592. The total strength of the Japanese army is about150,000. After the troops landed in Busan, they marched in, occupied Seoul, Kaesong and Pyongyang successively, advanced into Hamgyong Road and approached the border of China. However, its navy was defeated by Li Shunchen on the idle mountain island. 1at the end of 592, the Ming dynasty began to send troops to Korea to participate in the war. The following year, Li was recaptured by the Ming Dynasty in Pyongyang and Kaesong, and the Japanese army was forced to retreat to two coastal cities, Gyeongsang and Jeolla, and began peace talks with the Ming Dynasty. At the beginning of 1597, the peace talks broke down, and Toyotomi Hideyoshi successively sent140,000 troops and hundreds of warships into North Korea again. On June+10, 5438, Li Shunchen defeated the Japanese in the naval battle in Liang Ming, and the Ming army re-entered Korea, hitting the Japanese hard in Jishan and Qingshan, forcing them to retreat to Ulsan, Suichuan and Shuntian. 1598 In August, Toyotomi Hideyoshi died of illness, and all Japanese troops retreated. In the Ming dynasty, the allied forces pursued after it, and finally annihilated more than 10 thousand Japanese troops in the exposed sea area, and the remnants returned to China, and the war ended. The Battle of Xianshan Island (A.D. 1592) 1592, after the Japanese army invaded Korea, the army marched, but the navy was attacked by Li Shunchen, the general of the North Korean water army, in Yupu, Yongdengpu and Chizhenpu, resulting in numerous material losses. In order to replenish the army's materials in time, Japanese navy general Jia Long, an alcoholic, sent a three-way fleet to invade North Korea and fought a decisive battle with Li Shunchen's fleet in front of the idle mountain island. The water depth of the idle mountain island is conducive to the turtle boat action of the Korean army. At first, the Korean army used a small-scale offensive to lure the Japanese into the encirclement. After the Japanese army all entered, the main force hidden in the north of the idle mountain island immediately spread out the crane wing array and defeated the Japanese army from the front and side. This battle * * * destroyed 59 Japanese warships and killed thousands of people. It is known as the triumph of Xianshan Island in history. Shortly thereafter, Li Shunchen completely wiped out the remaining enemy forces in Angup. Victory in Pyongyang (A.D.1593)1593 65438+10. On 3 October, the Ming Dynasty general Li led 43,000 troops into Suchuan, surrounded Pyongyang on 6 October, 65438, and launched a general attack the next day. The Japanese generals had a favorable geographical position, retreated and kept shooting with muskets in the earth cave of Lianguangge, while Li stormed and fought with the advantage of quantity. Both sides suffered heavy casualties, and even Li's mount was shot and killed. Finally, the Ming army was exhausted and forced to retreat. But Konishi Yukinaga was too exhausted to fight any more. He led the disabled soldiers across the frozen Datong River overnight and fled to the south. Li sent troops after him, killing more than 600 people. This battle * * * annihilated the Japanese army 1646, captured 5 people alive, and the Ming army suffered 796 casualties. The Battle of Lvliang (A.D. 1598) was the last battle of North Korea in War of Resistance against Japanese Aggression. 1August 598 18, Toyotomi Hideyoshi died of illness and was ordered to leave North Korea. Japanese morale is low. On September 20th, the allied forces of China and North Korea went hand in hand by land, launched a large-scale attack on Konishi Yukinaga's garrison in Shuntian, and stormed Jinzhou at the same time. 165438+ 10, the Japanese army's bearing capacity has reached its limit, and Konishi Yukinaga's proposal for peace talks was rejected, so he turned to General Shimadzu Yihong for help. Shimadzu Yoshihiro assembled nearly 500 ships in an attempt to break through the defense lines of the allies and get through the road to return home. On the exposed sea, the last large-scale water war was launched with the water army of General Chen Lin of Ming Dynasty and General Chao. In the battle, Li Shunchen and Deng Zilong, a veteran of the Ming Dynasty, were shot and killed successively, but Shimadzu Hongyi's fleet was also annihilated by more than 200 ships. Konishi Yukinaga led the remnants to flee to Japan, and North Korea won the final victory in the war against aggression.