Treatise on Armament Technology, Volume 231

To establish long-term measures for the campaign, I had to wait for the assembly of troops and the accumulation of provisions. Before Xing Jie The Ming Supreme Commander of military affairs in Korea had even reached the Royal Capital Hanseong, modern-day Seoul, Japanese scouting parties had already reached Jeonui Station, located only one hundred and fifty li approximately 75 kilometers from the capital. Lieutenant Generals Yang Dengshan and Niu Boying defeated them, beheading their valiant commander, Ye Yizhi Likely a Chinese phonetic transcription of a Japanese officer's name. This success somewhat dampened the enemy’s morale.

Upon his arrival, Xing Jie conducted reconnaissance and learned that Konishi Yukinaga's camp was located at Busan, while Katō Kiyomasa's camp was positioned at Seosaengpo. He consulted with his generals, stating:

"If we strike Busan first, the Japanese will hold the strategic high ground and natural barriers, and our land and naval forces will be unable to support one another. We must first defeat Kiyomasa; only then can we exert the full strength of our infantry. We should push east to Dongnae and Gijang, and north to Gyeongju and Ulsan. However, we must secure the naval forces to act as a surprise contingent Qibing (奇兵): a tactical unit used for flanking, distraction, or unexpected maneuvers to keep the enemy distracted on all sides. Only then can our land forces safely advance. My primary concern is that our naval forces are currently too weak."

Consequently, they tallied their combined infantry and cavalry, reaching over forty thousand men. Combined with the Korean forces numbering more than ten thousand, they organized the ranks. Gao Ce was appointed to lead the Central Army, while Li Rumei was assigned to...