The criminal neglect of opportunity in driving away the friendly Japanese envoy now began to bear its bitter fruit. Many Japanese had from time to time settled peacefully in southern Koryŭ and the king had given them a place to live at Nam-hă in Kyŭng-sang Province. They now broke their oath of fealty to the government, rose in open revolt and began ravaging the country right and left. As the emperor of the Mongols had fled away north and his scheme for taking refuge in Quelpart had come to naught we would suppose the Mongol horse-breeders in that island would act with considerable circumspection; but on the other hand they kept up a continual disturbance, revolting and surrendering again in quick succession much to the annoyance of the central government. In the latter part of the year 1369 the government again took a census of the arable land of the peninsula in order to make a re-estimate of the revenue to be received. This indicates that there had been a certain degree of prosperity in spite of all untoward circumstances and that the margin of cultivation had moved at least a little way up the hill-sides, and that waste land had been reclaimed. It is only by inferences from chance statements like this that we get an occasional imperfect glimpse of the condition of the common people. Oriental histories have not been written with reference to the common people. The king had now handed over to Sin-don the whole care of public business and he was virtually the ruler of the land. Gen. Yi T‘ă-jo had shown his wisdom in staying as far as possible from the capital and in not crossing the path of the dangerous favorite. He was now appointed general-in-chief of all the north-eastern territory and at the same time Gen. Yi Im-in was appointed to a similar position in the north-west. There was some fear lest fugitive Mongols might cross the border and seek refuge in Koryŭ territory. The chief business of the army there was to guard all the approaches and see to it that such fugitives were strictly excluded. In the following year, 1370, Gen. Yi T‘ă-jo even crossed the Yalu, probably in the vicinity of the present Sam-su, into what was then Yŭ-jin territory, and took 2000 bullocks and 100 horses, but gave them all to the people to be used in cultivating the fields.