Kato and Konishi, remaining but a short time in the capital, united their divisions and pressed forward to the north. Reaching the Rin-yin River, they found the Corean junks drawn up on the opposite side in battle array. The Japanese, being without boats, could not cross, and waited vainly during several days for something to turn up. Finally they began a feigned retreat. This induced a portion of the Corean army to cross the river, when the Japanese turned upon them and cut them down with terrible slaughter. With the few rafts and boats used by the enemy, the Japanese matchlock men rapidly crossed the stream, shot down the sailors and the remaining soldiers in the junks, and thus secured the fleet by which the whole army crossed and began the march on Ping-an. The rival Japanese commanders, Kato and Konishi, who had hitherto refrained from open quarrel, now found it impossible to remain longer together, and drew lots to decide their future fields of action in the two northern provinces. Ham-kiung fell to Kato, who immediately marched eastward with his division, taking the high road leading to Gensan. Konishi, to whom the province of Ping-an fell, pushed on to Ping-an City, arriving on the south bank of the river toward the end of July, or about three weeks after leaving Seoul. Here he went into camp, to await the reinforcements under Kuroda and Yoshitoshi. These soon afterward arrived, having traversed the four provinces bordering on the Yellow Sea. The great need of the Japanese was floating material; next to this, their object was to discover the fords of the river. On July 20th they made a demonstration against the fleet of junks along the front of the city, by sending out a few detachments of matchlock men on rafts. Though unsuccessful, the Corean king was so frightened that he fled with his suite to Ai-chiu. The garrison still remained alert and defiant.