The Yuan dynasty (1206–1368)

While the Mongol occupation destroyed much, it also shook China free from the static traditions and techniques of the late Southern Song and made possible many innovations, both in painting and in the decorative arts. The north was not progressive, and the main centre of pottery activity shifted permanently to the south. The northern traditions of Jun and Cizhou ware continued through the Jin and Yuan, bolder but coarser than before. New shapes included a heavy, wide-mouthed jar, sometimes with decoration boldly carved through a black or brown slip or painted in two or three colours. These new techniques and the overglaze painting already developed in the Jin dynasty prepared the way for the three- and five-colour wares of the Ming.

While no Yuan celadon has the perfection of colour of Song Guan and Longchuan wares, being more olive green in tone, the quality is high. And the variety of decorative techniques used is far wider than that of the Song. These include raised relief designs molded under the glaze, fish and dragons raised “in the biscuit” (that is, unglazed) in relief, and iron-brown spots that the Japanese call tobi seiji (“flying celadon”). Vases and dishes were now sturdily potted in porcelain, often mold-made, and of considerable size.

Factories at Jingdezhen were expanding rapidly. While their products included celadon, their chief output, as before, was white porcelain, including richly modeled figurines of Guanyin and other Buddhist deities. Qingbai was now decorated with floral motifs and beading in raised relief or incised under the glaze, the most elaborate pieces combining flowers and vines in appliqué relief with openwork panels. A stronger, less sugar-white porcelain with molded or incised decoration was produced; called shufu ware, it sometimes bore the characters shufu, meaning “central government palace,” for the ware was often ordered by imperial officials.

The earliest evidence of the use of cobalt blue, probably imported from the Middle East, is seen in its application as an underglaze pigment on fragments dating to the late 8th or early 9th century that were unearthed at Yangzhou in 1983. The occasional use of underglazed cobalt continued in the Northern Song. It was not until the Yuan dynasty, however, that underglazed blue decoration began a rapid rise in popularity. It was applied on fine white porcelains of the shufu type and combined with Islamic decorative taste. These blue-and-white wares soon became the most popular of all Chinese ceramics, both at home and abroad. A pair of richly ornate temple vases dated 1351 (in the Percival David Foundation in London) are proof that the technique had been fully mastered by that time. The finest Jingdezhen examples were reserved for the court, but coarse varieties were made in southern China for trade with Southeast Asia or for export to the Middle East.

Experiments also were made with painting in underglaze copper red, but it was difficult to control and soon abandoned. Both the shapes and decoration of Yuan blue-and-white have a characteristic boldness. The motifs are richly varied, sometimes crowded and unrestrained, but at their best they have great splendour and vitality. Favourite motifs include the lotus, vines, and dragons that had already appeared on the shufu wares, creatures such as the qilin (“unicorn”) and longma (“dragon-horse”), and fish and Daoist figures. Also popular for a while were scenes from historical dramas and romances written by unemployed Confucian scholars.

The Ming dynasty (1368–1644)

While northern traditions of Cizhou and Jun ware continued to decline, pottery production in the south expanded. It was chiefly centred on Jingdezhen, an ideal site because of the abundance of minerals used for porcelain manufacture—kaolin (china clay) and petuntse (china stone)—ample wood fuel, and good communications by water. Most of the celadon, however, was still produced in Zhejiang, notably at Longchuan and Chuzhou, whose Ming products are more heavily potted than those of the Song and Yuan and are decorated with incised and molded designs under a sea-green glaze. Celadon dishes, some of large size, were an important item in China’s trade with the Middle East, whose rulers, it was said, believed that the glaze would crack or change colour if poison touched it.

At Jingdezhen the relatively coarse-bodied shufu ware was developed into a hard white porcelain that no longer reveals the touch of the potter’s hand. The practically invisible designs sometimes carved in the translucent body are known as anhua (“secret decoration”). In the Yongle period (1402–24) the practice began of putting the reign mark on the base (see below marks and decoration in Chinese pottery). This was first applied to the finest white porcelain and to monochrome ware decorated with copper red under a transparent glaze. As aforementioned, a white porcelain with ivory glaze was also made at Dehua in Fujian.

In the early decades of the Ming, the repertoire of designs on Yuan blue-and-white was continued and refined. At first, this ware evidently was considered too vulgar for court use, and none bears the imperial reign mark until the Xuande period (1425–35). By this time the often crowded Yuan patterns had given way chiefly to dragons or floral motifs of great clarity and grace, vigorously applied in a thick, deep-blue pigment to dishes, vases, stem cups, and flattened pilgrim jars. Sometimes a richer effect was achieved by painting dragons in underglaze red on a blue ground or vice versa. In the Chenghua period (1464–87), the blue-and-white designs became somewhat tenuous and overrefined, and the characteristic wares made for the Zhengde emperor (1505–21) and his Muslim eunuchs often bear Arabic inscriptions. In the Jiajing (1521–67) and Wanli (1572–1620) periods, the imperial kilns were badly mismanaged, and their products were often of poor quality. Private factories, however, turned out lively wares until the end of the dynasty.

Overglaze painting was applied with delicate care in the Chenghua period, chiefly in the decoration of small wine cups with chicken motifs, much admired by Chinese connoisseurs. These “chicken cups” were already being copied later in the 16th century and again, very expertly, in the 18th. Overglaze painting soon became popular; it was applied in the 16th century in stronger colours brilliantly contrasted against a dead-white background. These vigorous wucai (“five-colour”) wares, which utilized a wide palette, were especially free and bold in the Jiajing and Wanli periods. Crude but lively imitations of these and of the blue-and-white of Jingdezhen were made in kilns in southern China partly for the Southeast Asian market and are known as “Swatow ware,” named after one of the export sites. Among the most impressive of Ming pottery types are the sancai (“three-colour”) wares, chiefly vases and jars decorated with floral motifs in turquoise, purple, yellow, and deep violet blue, the colours separated by raised lines in imitation of the metal strips used in cloisonné work (see below). This robust ware was made in several centres, the best of it between 1450 and 1550.

Beginning in the early 16th century, a new ceramic tradition emerged in the town of Yixing, on the western side of Lake Tai, catering to the tea taste of scholars in the nearby Suzhou area. Individually made, sometimes to order, rather than mass-produced, Yixing wares were often signed or even poetically inscribed by highly reputable master craftsmen, such as Shi Dabin of the Wanli era and Chen Mingyuan of the Qing dynasty Kangxi period. The wares were usually unglazed and derived their striking colours—brown, beige, reddish purple, yellow, black, and blue—after firing from the distinctive clays of the region and were known as “purple-sand” teapots. Pieces alternated between two body types: complex floral shapes and exquisitely simple geometric designs. Produced in relatively small quantities and treasured by Chinese collectors, these vessels attracted little attention outside China until the late 20th century.