From the beginning of the Yuan Dynasty, there were often harassment by Wokou in the southeast coastal areas of China, and in the middle and late Ming Dynasty, on the one hand, Japan entered the Warring States Era, on the other hand, the Ming Dynasty was corrupt, and Japanese pirates colluded with Chinese pirates Wang Zhi and Xu Hai to attack and plunder townships and towns along the coasts of Jiangsu, Zhejiang, and Fujian, resulting in a large outbreak of woe in southeast China.
The imperial court had sent officials to govern the coastal area of coastal defense on many occasions, but all of them were difficult to achieve results due to political corruption and other reasons, and in the end, it was Qi Jiguang, Yu Dayu and other generals who successively pacified the Wukou pirates in Jiangsu, Zhejiang, Fujian, and Guangdong, and only then did they stabilize the southeast region.
Because The Ming Emperor Zhu Yuanzhang had declared 15 overseas countries such as Korea and Japan as "countries without conquest" in the 28th edition of the "Imperial Ming Ancestral Training" of Hongwu, and warned future generations not to arbitrarily conquest, the attitude of the Ming court has always been to defend and not counterattack. However, thirty years after the "Jiajing Rebellion" subsided, the Wokou made a comeback again.
This time, instead of attacking Daming directly, Wokou went to fight Korea. After receiving a letter of request for help from the Kingdom of Korea, the Wanli Emperor, who had not been in the Dynasty for more than 20 years, decided to send troops to aid the DPRK, which was later one of the famous "Three Great Marches of the Wanli Dynasty", the "Battle of Korea".
However, in this battle, there was a person who almost destroyed Japan.
After the Ming army entered the war, the Japanese suffered heavy casualties, and Toyotomi Yoshihide had to propose peace talks, but the negotiations were discussed for several years without the two sides reaching an agreement. Just when the Manchu ministers were all fighting, Jin Xue, the governor of Fujian, offered a plan, saying that the most effective way to solve this "Nongchen Rebellion" was to let the well-trained and well-equipped Fujian marine divisions send troops to Japan and force Japan to obey with absolute military strength.
At that time, the Wanli Emperor had already been irritated by the war, and when he heard that there was such a quick way to end the war, he immediately ordered it to be implemented in order to completely solve the Wukou rebellion. In order to completely eradicate the Wokou rebellion, Jin Xuezeng also sent a large number of spies to Japan, and after learning of toyotomi Hideyoshi's illness and the situation of the great chaos in Japan, he was even more excited, and successfully ambushed the Wokou who were eager to return to Japan in the Luliang area, giving a heavy blow to Japan.
Regrettably, just when Jin Xue was planning to cross the ocean to establish an industry in the wokou old lair, Yang Yinglong, the head of the Miao Territory, launched a rebellion, and the Wanli Emperor transferred the army back to suppress the rebellion, resulting in the collapse of the plan to attack Japan.