On the morning of April 27th, in the year of Gapo, the peasant army of 30,000 rebels, who had spent the night in
Samcheon, under the command of General Jeon Bong-jun, began their attack on Jeonju Castle early in the morning. The peasant army, arranged in a formation centered around Yongmeori, observed the situation inside and outside the castle and finally launched the attack on Jeonju Castle around noon. It happened to be a day when the market was held outside the western gate. The peasant army infiltrated the marketplace disguised as traders. There were a lot more merchants than usual so it was easy to blend in, and loud gunshots began to explode one after another from Yongmeori Pass. It was a cannon fired by the peasant army. The merchants, startled by the sound of the guns, frantically pushed into the west and south gates, and the peasant soldiers also entered the fortress with them and started shooting. The peasant army attacked from the west, south, and north gates, except for the east gate, and broke the western gate with captured cannons from the Changseong Battle. Soon, the castle gate opened, and Jeon Bong-jun took over Seonhwadang, the office of the governor of Jeolla. "Donghaksa" vividly records the scene of the peasant army entering Jeonju Castle as follows: The soldiers guarding Jeonju Fortress barely fired a single cannonball before running away. Kim Mun-hyeon, the governor of Jeolla, had already been dismissed as of April 18th, and Kim Hak-jin, who was appointed as his successor to handle "Supervisory Negotiations and Trade Affairs," had not yet taken office. The military forces under the Garrison Army were under the authority of Cho To-sa Hong Gye-hun, so Jeonju Castle was practically disarmed. Amidst the chaos, Chamberlain Jang Hyo-won, with the portrait of
King Taejo, which was enshrined in Gyeonggijeon, wrapped around his waist, and holding the ancestral tablet of the
Jeonju Yi clan belonging to Yi Han, rushed to Wibongsanseong. Only Minister Min Young-seung, who was fleeing alone, discovered Chamberlain Jang Hyo-won and quickly handed over his horse, and they both proceeded to Wibongsa Daewoongjeon. It was an act of nobility aimed at later seeking exemption from the crime of abandoning the castle. Governor Kim Mun-hyeon, without caring about his dignity, discarded his official robe and fled to Gongju wearing tattered clothes and straw shoes. It was not only Kim Mun-hyeon who escaped. Jung Yeong-jang, Im Tae-doo, and Min Young-seung, among others, were busy trying to save their own lives. He appeared in
Gongju on April 29th, and told the government of the fall of Jeonju. Unable to control the rebellion, the government of Joseon formally requested the military assistance from both Japan and China. On 3 May, 1,500
Qing Dynasty forces appeared in Incheon. The same day, 6,000
Japanese forces also landed in Incheon. The Japanese inquired why Qing had not notified the Japanese government in accordance to the
Convention of Tientsin, and soon caused the
First Sino-Japanese War. Jeon Bong-jun, stationed in Seonhwadang, reorganized the peasant army, firmly defended the four gates, and established discipline to rectify the disorder within the peasant army. They trained in swordsmanship and martial arts inside the castle and collected fabrics, discarding their winter clothes that had not been changed for a long time and making new summer clothes. ==Siege==