[2] Following the capture of Pyongyang by the Japanese army led by Konishi Yukinaga, Korean King Seonjo retreated to Yongbyon and thence to Uiju near the border with China.

The promised materials were to have been sent by ships via the west coast of Korea, but due to Korean Admiral Yi Sun-sin's string of victories in the Yellow Sea, most of the Japanese transports had been sunk.

Only a trickle of men and supplies was reaching Pyongyang via the long overland route, and other Japanese commanders were facing similar difficulties and were unable to provide him with any assistance.

[2] Zu Chengxun attempted to downplay the defeat, advising King Seonjo that he had only made a "tactical retreat" due to the weather, and would return from China after raising more troops.

[8] Realizing that the attack by Zu Chengxun was only the start of Ming involvement in the conflict, Konishi Yukinaga traveled south to Hanseong on 12 September to discuss plans for a defense in depth with Ukita Hideie, which would enable him to make a controlled withdrawal from Pyongyang if faced with overwhelming odds in the future.

[9] Zu Chengxun's defeat caused a heated debate in Beijing, where the government had finally awoken to the potential threat to the empire should the Japanese complete their conquest of Korea.