The Japanese retreat from P’yŭng-yang was not without its casualties. A Korean general, Ko On-băk, met a body of the Japanese, probably a part of the retreating army, at P’a-ju, seventy _li_ out of Seoul, and punished them severely, taking as it is said, seventy heads; not a great achievement when we remember that the Japanese were practically unarmed. But by this time the Chinese Gen. Yi was on his way south from P’yŭng-yang, rather tardily as the Koreans thought, but hearing of this engagement of Gen. Ko, he quickened his pace. Coming to He-on Pass, some seventy _li_ out from Seoul, his horse slipped, throwing him heavily on his face. He was severely though not dangerously hurt. At that moment a company of Japanese was sighted on the mountain side and Gen. Yi ordered instant pursuit. The Japanese, probably a foraging party from Seoul, closed with them and as the Chinese were on a marshy piece of land, where they sank to their knees in the mud, and had no other weapons with them but their swords, the Japanese inflicted severe punishment on them, killing eighty of their number. Gen. Yi was so weak from loss of blood that he did not dare to prolong the fight. So he called a retreat and the next day went into camp at Tong-p’a, a hundred _li_ from Seoul. From that point he immediately despatched a letter to the Emperor saying: “There are 20,000 Japanese firmly intrenched in Seoul and with my present force I dare not attack them. I am also ill and cannot fight. I would be glad if you would send someone to relieve me of the command.” Then he retreated fifty _li_ further, to Song-do, in spite of the earnest entreaties of the Koreans. The Korean General Yi Pin said, “You came to render aid to our country. Why is it that you now retreat?” whereupon one of the general’s staff promptly kicked him out of the house.