Katō Kiyomasa. Hwanghae by the Third Division led by Kuroda Nagamasa. Gangwon by the Fourth Division led by Mōri Katsunaga. Chungcheong by the Fifth Division led by Fukushima Masanori. Jeolla by the Sixth Division led by Kobayakawa Takakage. Gyeongsang by the Seventh Division led by Mōri Terumoto. Gyeonggi by the Eighth Division led by Ukita Hideie. 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 general 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 north of Seoul, in modern day Goyang City. 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 resupply their troops who were bogged down in Seoul. Succession dispute The birth of Hideyoshi's second son in 1593, Hideyori, created a potential succession problem. To avoid it, Hideyoshi exiled his nephew and heir Hidetsugu to Mount Kōya and then ordered him to commit suicide in August 1595. Hidetsugu's family members who did not follow his example were then murdered in Kyoto, including 31 women and several children. Twenty-six martyrs of Japan In January 1597, Toyotomi Hideyoshi had twenty-six Christians arrested as an example to Japanese who wanted to convert to Christianity. They are known as the Twenty-six Martyrs of Japan. They included five European Franciscan missionaries, one Mexican Franciscan missionary, three Japanese Jesuits and seventeen Japanese laymen including three young boys. They were tortured, mutilated, and paraded through towns across Japan. On February 5, they were executed in Nagasaki by public crucifixion. Second campaign against Korea After several years of negotiations (broken off because envoys of both sides falsely reported to their masters that the opposition had surrendered), Hideyoshi appointed Kobayakawa Hideaki to lead a renewed invasion of Korea,