person in China uses an average of twelve pounds of salt per year. The salt tax was the top budget item around A.D. 900.
South-eastern China was also the chief centre of porcelain production, although china clay is found also in North China. The use of porcelain spread more and more widely. The first translucent porcelain made its appearance, and porcelain became an important article of commerce both within the country and for export. Already the Muslim rulers of Baghdad around 800 used imported Chinese porcelain, and by the end of the fourteenth century porcelain was known in Eastern Africa. Exports to South-East Asia and Indonesia, and also to Japan gained more and more importance in later centuries. Manufacture of high quality porcelain calls for considerable amounts of capital investment and working capital; small manufacturers produce too many second-rate pieces; thus we have here the first beginnings of an industry that developed industrial towns such as Ching-tê, in which the majority of the population were workers and merchants, with some 10,000 families alone producing porcelain. Yet, for many centuries to come, the state controlled the production and even the design of porcelain and appropriated most of the production for use at court or as gifts.
The third important new development to be mentioned was that of printing, which since c. 770 was known in the form of wood-block printing. The first reference to a printed book dated from 835, and the most important event in this field was the first printing of the Classics by the orders of Feng Tao (882-954) around 940. The first attempts to use movable type in China occurred around 1045, although this invention did not get general acceptance in China. It was more commonly used in Korea from the thirteenth century on and revolutionized Europe from 1538 on. It seems to me that from the middle of the twentieth century on, the West, too, shows a tendency to come back to the printing of whole pages, but replacing the wood blocks by photographic plates or other means. In the Far East, just as in Europe, the invention of printing had far-reaching consequences. Books, which until then had been very dear, because they had had to be produced by copyists, could now be produced cheaply and in quantity. It became possible for a scholar to accumulate a library of his own and to work in a wide field, where earlier he had been confined to a few books or even a single text. The results were the spread of education, beginning with reading and writing, among wider groups, and the broadening of education: a large number of texts were read and compared, and no longer only a few. Private libraries came into existence, so that the imperial libraries were no longer the only
ones. Publishing soon grew in extent, and in private enterprise works were printed that were not so serious and politically important as the classic books of the past. Thus a new type of literature, the literature of entertainment, could come into existence. Not all these consequences showed themselves at once; some made their first appearance later, in the Sung period.
A fourth important innovation, this time in North China, was the introduction of prototypes of paper money. The Chinese copper "cash" was difficult or expensive to transport, simply because of its weight. It thus presented great obstacles to trade. Occasionally a region with an adverse balance of trade would lose all its copper money, with the result of a local deflation. From time to time, iron money was introduced in such deficit areas; it had for the first time been used in Szechwan in the first century B.C., and was there extensively used in the tenth century when after the conquest of the local state all copper was taken to the east by the conquerors. So long as there was an orderly administration, the government could send it money, though at considerable cost; but if the administration was not functioning well, the deflation continued. For this reason some provinces prohibited the export of copper money from their territory at the end of the eighth century. As the provinces were in the hands of military governors, the central government could do next to nothing to prevent this. On the other hand, the prohibition automatically made an end of all external trade. The merchants accordingly began to prepare deposit certificates, and in this way to set up a sort of transfer system. Soon these deposit certificates entered into circulation as a sort of medium of payment at first again in Szechwan, and gradually this led to a banking system and the linking of wholesale trade with it. This made possible a much greater volume of trade. Towards the end of the T'ang period the government began to issue deposit certificates of its own: the merchant deposited his copper money with a government agency, receiving in exchange a certificate which he could put into circulation like money. Meanwhile the government could put out the deposited money at interest, or throw it into general circulation. The government's deposit certificates were now printed. They were the predecessors of the paper money used from the time of the Sung.
4 Political history of the Five Dynasties
The southern states were a factor not to be ignored in the calculations of the northern dynasties. Although the southern kingdoms were involved in a confusion of mutual hostilities, any one of them
might come to the fore as the ally of Turks or other northern powers. The capital of the first of the five northern dynasties (once more a Liang dynasty, but not to be confused with the Liang dynasty of the south in the sixth century) was, moreover, quite close to the territories of the southern dynasties, close to the site of the present K'aifeng, in the fertile plain of eastern China with its good means of transport. Militarily the town could not be held, for its one and only defence was the Yellow River. The founder of this Later Liang dynasty, Chu Ch'üan-chung (906), was himself an eastern Chinese and, as will be remembered, a past supporter of the revolutionary Huang Ch'ao, but he had then gone over to the T'ang and had gained high military rank.
His northern frontier remained still more insecure than the southern, for Chu Ch'üan-chung did not succeed in destroying the Turkish general Li K'o-yung; on the contrary, the latter continually widened the range of his power. Fortunately he, too, had an enemy at his back—the Kitan (or Khitan), whose ruler had made himself emperor in 916, and so staked a claim to reign over all China. The first Kitan emperor held a middle course between Chu and Li, and so was able to establish and expand his empire in peace. The striking power of his empire, which from 937 onward was officially called the Liao empire, grew steadily, because the old tribal league of the Kitan was transformed into a centrally commanded military organization.
To these dangers from abroad threatening the Later Liang state internal troubles were added. Chu Ch'üan-chung's dynasty was one of the three Chinese dynasties that have ever come to power through a popular rising. He himself was of peasant origin, and so were a large part of his subordinates and helpers. Many of them had originally been independent peasant leaders; others had been under Huang Ch'ao. All of them were opposed to the gentry, and the great slaughter of the gentry of the capital, shortly before the beginning of Chu's rule, had been welcomed by Chu and his followers. The gentry therefore would not co-operate with Chu and preferred to join the Turk Li K'o-yung. But Chu could not confidently rely on his old comrades. They were jealous of his success in gaining the place they all coveted, and were ready to join in any independent enterprise as opportunity offered. All of them, moreover, as soon as they were given any administrative post, busied themselves with the acquisition of money and wealth as quickly as possible. These abuses not only ate into the revenues of the state but actually produced a common front between the peasantry and the remnants of the gentry against the upstarts.