In southwestern China the valley of what is now Sichuan presented a notably different picture of continuous growth. Usually protected from outside disturbances and invasions by the surrounding mountains, it enjoyed peace and prosperity except for one decade of instability between the Qian Shu and Hou Shu. The beautiful landscape inspired poets, who infused a refreshing vitality into old-style poetry and essays. In this region, a stronghold of Daoist religion, the people inserted into Confucian scholarship an admixture of Daoist philosophy. Buddhism also flourished. These intellectual trends in Sichuan foreshadowed an eclectic synthesis of the three major teachings—Confucianism, Daoism, and Buddhism.
The Buddhist monasteries owned large estates and were usually among the first to introduce new and better technology. Growing commerce created a demand for money. The ensuing shortage of copper for coinage was met by an increasing output of iron through more-efficient methods and an elementary division of labour in production. When the limited number of copper coins could no longer meet the growing volume of trade, iron currency briefly went into circulation. With increasing commerce, various paper credit instruments were also developed, the best-known being drafts for transmitting funds called feiqian (“flying money”). Somewhat later the private assay shops in Sichuan began to issue certificates of deposit to merchants who had left valuables at the shops for safekeeping. These instruments, which began to circulate, were the direct ancestors of the paper money that emerged in the early 11th century.
During the Wudai, printing became common. The most famous and monumental cultural production of the period was the editing and printing of the Confucian Classics and the Buddhist Tipitaka, but a printing industry also emerged during the Wudai that produced works for private buyers. The best printing in the country during the Wudai and the Song dynasty came from the regions of Sichuan and Fujian.
From the Wudai onward, southeastern China, especially its core region of the Yangtze delta, began to lead the country in both economic prosperity and cultural refinement. In this region, fertile soil, irrigation networks, and highly selected crops combined to create the best model of intensive farming. Interlocking streams, rivers, and lakes fed an ever-increasing number of markets, market towns, cities, and metropolitan areas, where many farm products were processed into an ever-expanding variety of consumer goods. Such development enhanced regional trade, stimulated other regions to adopt specialization, and promoted overseas commerce.
The Song conquerors from the north recognized the high level of cultural development in this region. After the surrender of the last Nan Tang ruler, himself a renowned poet, the unexcelled royal library was moved to the north; along with it went many officials who were skilled in art, literature, and bibliography. The surrender of the Wu-Yue kingdom, slightly farther south, followed the same pattern. Moreover, refined culture developed away from the coast in such inland mountainous areas as present-day Jiangxi, which shortly thereafter produced internationally coveted porcelain and where many great artists and scholar-officials attained positions of cultural leadership. Thereafter, southeastern China retained its cultural excellence. At the end of the Bei Song period, the Nan Song based itself in the lower Yangtze delta and located its capital at Lin-an (present-day Hangzhou), the former capital of the Wu-Yue.
As traditional histories stress, this period of disunity definitely had its dark side: militarism, wars, disintegration of the old order, and an inevitable lowering of moral standards. The dark side, however, stemmed largely from underlying changes that were transforming China into a new pattern that would last for nearly a millennium.
The barbarians: Tangut, Khitan, and Juchen
On the frontier, the far-reaching influence of Tang culture affected various nomadic, seminomadic, and pastoral peoples.
The Tangut
In the northwest the Tangut (Pinyin: Dangxiang), a Tibetan-speaking branch of the Qiang, inhabited the region between the far end of the Great Wall in present-day Gansu and the Huang He bend in Inner Mongolia. Their semi-oasis economy combined irrigated agriculture with pastoralism, and, by controlling the terminus of the famous Silk Road, they became middlemen in trade between Central Asia and China. They adopted Buddhism as a state religion, in government and education followed the Tang model, and devised a written script for their own language. This richly mixed culture blossomed, as evidenced by the storing at the Dunhuang caves of an unparalleled collection of more than 30,000 religious paintings, manuscripts, and books in Chinese, Tibetan, Uighur, and other languages. In 1038 the Tangut proclaimed their own kingdom of Xi (Western) Xia, which survived for nearly two centuries with remarkable stability despite a series of on-and-off border clashes with the neighbouring states in northern China. The kingdom’s end came at the hands of the Mongols, the first nomads to conquer all of China.
The Khitan
To the north at the time of the Wudai rose the seminomadic but largely pastoral Khitan, who were related to the eastern Mongols. The word Khitan (or Khitai) is the source of Cathay, the name for northern China in medieval Europe (as reported by Marco Polo), and of Kitai, the Russian name for China. The Khitan founded the Liao dynasty (907–1125) by expanding from the border of Mongolia into both southern Manchuria and the 16 prefectures south of the Great Wall. This area below the line of the Great Wall was to remain out of Chinese political control for more than 400 years. Its control by a non-Chinese state posed a dangerous security problem for the Bei (Northern) Song. More importantly in the long run, this region acted for centuries as a centre for the mutual exchange of culture between the Chinese and the northern peoples.
The Liao made Yanjing (present-day Beijing) their southern capital, thus starting that city’s history as a capital, and claimed to be the legitimate successors to the Tang. They incorporated their own tribes under respective chieftains and, with other subdued tribes in the area, formed a confederation, which they then transformed into a hereditary monarchy. Leadership always remained in the hands of the ruling tribe, the Yelü, who for the sake of stability shifted to the Chinese clan system of orderly succession.
The Liao economy was based on horse and sheep raising and on agriculture. Millet was the main crop, and salt, controlled by government monopoly, was an important source of revenue. Other commodities included iron produced by smelters. The Liao employed an effective dual system of administration to guard against the danger of being absorbed by Sinicization. They had one administration for their own people that enforced tribal laws, maintained traditional rites, and largely retained the steppe style of food and clothing. The Liao deliberately avoided the use of Chinese and added to their particular branch of the Mongolian language two types of writing—a smaller one that was alphabetical and a larger one related to Chinese characters. A second administration governed the farming region using the old Tang system, with Tang official titles, an examination system, Chinese-style tax regulations, and the Chinese language. The laws of the second administration enforced the established way of life, including such practices as ancestral worship among the Chinese subjects. The status of Chinese subjects varied: some were free subjects who might move upward into the civil service, while others might be held in bondage and slavery.