The years 1355-1368 were full of small battles. After his conquest of the whole of the south, Chu went north. In 1368 his generals captured Peking almost without a blow. The Mongol ruler fled on horseback with his immediate entourage into the north of China, and soon after into Mongolia. The Mongol dynasty had been brought down, almost without resistance. The Mongols in the isolated garrisons marched northward wherever they could. A few surrendered to the Chinese and were used in southern China as professional soldiers, though they were always regarded with suspicion. The only serious resistance offered came from the regions in which other Chinese popular leaders had established themselves, especially the remote provinces in the west and south-west, which had a different social structure and had been relatively little affected by the Mongol régime. Thus the collapse of the Mongols came for the following reasons: (1) They had not succeeded in maintaining their armed strength or that of their allies during the period of peace that followed Kublai's conquest. The Mongol soldiers had become effeminate through their life of idleness in the towns. (2) The attempt to rule the empire through Mongols or other aliens, and to exclude the Chinese gentry entirely from the administration, failed through insufficient knowledge of the sources of revenue and through the abuses due to the favoured treatment of aliens. The whole country, and especially the peasantry, was completely impoverished and so driven into revolt. (3) There was also a psychological reason. In the middle of the fourteenth century it was obvious to the Mongols that their hold over China was growing more and more precarious, and that there was little to be got out of the impoverished country: they seem in consequence to have lost interest in the troublesome task of maintaining their rule, preferring, in so far as they had not already entirely degenerated, to return to their old home in the north. It is important to bear in mind these reasons for the collapse of the Mongols, so that we may compare them later with the reasons for the collapse of the Manchus. No mention need be made here of the names of the Mongol rulers in China after Kublai. After his death in 1294, grandsons and great-grandsons of his followed each other in rapid succession on the throne; not one of them was of any personal significance. They had no influence on the government of China. Their life was spent in intriguing against one another. There were seven Mongol emperors after Kublai. 6 _Cultural_