李如松
When Hideyoshi received refusals to his demands by Korea to cross the country to Ming-dynasty China, he invaded Korea. In the first year of invasion in 1592, the Japanese reached as far as Manchuria under Katō Kiyomasa and fought the Jianzhou Jurchens. Seonjo (Korean king) requested aid from the Ming dynasty, but since Japanese advances were so fast, only small Ming forces were initially committed. Konishi Yukinaga, who garrisoned in Pyongyang in winter 1592, first encountered and defeated a force of 5,000 Chinese soldiers. In 1593, greater Chinese participation under General Li Rusong with an army of 45,000 took Pyongyang with artillery and drove the Japanese to the south, but the Japanese forces defeated them at the Battle of Byeokjegwan.