Li Rusong
In only four months, Hideyoshi's forces had a route into Manchuria and occupied much of Korea. The Korean king Seonjo of Joseon escaped to Uiju and requested military intervention from China. In 1593, the Wanli Emperor of Ming China sent an army under general Li Rusong to block the planned Japanese invasion of China and recapture the Korean peninsula. The Ming army of 43,000 soldiers headed by Li Ru-song proceeded to attack Pyongyang. On January 7, 1593, the Ming relief forces under Li recaptured Pyongyang and surrounded Seoul, but Kobayakawa Takakage, Ukita Hideie, Tachibana Muneshige and Kikkawa Hiroie won the Battle of Byeokjegwan in the suburbs of Seoul. At the end of the first campaign, Japan's entire navy was destroyed by Admiral Yi Sun-sin of Korea whose base was located in a part of Korea the Japanese could not control. This, in effect, put an end to Japan's dream of conquering China as the Koreans simply destroyed Japan's ability to re-supply their troops who were bogged down in Seoul.