Although the Kins wished to sweep the Sungs from the throne, and their general Walipou went so far as to proclaim the emperor of a new dynasty, whose name is forgotten, another of the sons of Hoeitsong, Prince Kang Wang, had no difficulty in establishing his own power and in preserving the Sung dynasty. He even succeeded in imparting a new vigor to it, for on the advice of his mother, who pointed out to him that "for nearly two hundred years the nation appears to have forgotten the art of war," he devoted all his attention to the improvement of his army and the organization of his military resources. Prince Kang Wang, on becoming emperor, took the name of Kaotsong, and finally removed the southern capital to Nankin. He was also driven by his financial necessities to largely increase the issue of paper money, which had been introduced under the Tangs. As both the Kins and the Mongols had recourse to the same expedient, it is not surprising that the Sungs should also have adopted the simplest mode of compensating for a depleted treasury. Considering the unexpected difficulties with which he had to cope, and the low ebb to which the fortunes of China had fallen, much might be forgiven to Kaotsong, who found a courageous counselor in the Empress Mongchi, who is reported to have addressed him as follows: "Although the whole of your august family has been led captive into the countries of the north, none the less does China, which knows your wisdom and fine qualities, preserve toward the Sungs the same affection, fidelity, and zeal as in the past. She hopes and expects that you will prove for her what Kwang Vouti was for the Hans." If Kaotsong did not attain the height of this success, he at least showed himself a far more capable prince than any of his immediate predecessors.