Chinese ceramics

Chinese ceramic ware shows a continuous development since the pre-dynastic periods, and is one of the most significant forms of Chinese art. China is richly endowed with the raw materials needed for making ceramics. The first types of ceramics were made during the Palaeolithic era. Chinese Ceramics range from construction materials such as bricks and tiles, to hand-built pottery vessels fired in bonfires or kilns, to the sophisticated Chinese porcelain wares made for the imperial court. Porcelain is also occasionally called "china" in English.

Tang Sancai burial wares

Sancai means three-colours. However, the colours of the glazes used to decorate the wares of the Tang dynasty were not limited to three in number. In the West, Tang sancai wares were sometimes referred to as egg-and-spinach by dealers for the use of green, yellow and white. Though the latter of the two colours might be more properly described as amber and off-white / cream.

Sancai wares were northern wares made using white and buff-firing secondary kaolins and fire clays. At kiln sites located at Tongchuan, Neiqui county in Hebei and Gongxian in Henan, the clays used for burial wares were similar to those used by Tang potters. The burial wares were fired at a lower temperature than contemporaneous whitewares. Burial wares, such as the well-known representations of camels and horses, were cast in sections, in moulds with the parts luted together using clay slip. In some cases, a degree of individuality was imparted to the assembled figurines by hand-carving.

Jian tea wares

Jian blackwares, mainly comprising tea wares, were made at kilns located in Jianyang of Fujian province. They reached the peak of their popularity during the Song dynasty. The wares were made using locally won, iron-rich clays and fired in an oxidising atmosphere at temperatures in the region of 1300 °C. The glaze was made using clay similar to that used for forming the body, except fluxed with wood-ash. At high temperatures the molten glaze separate to produce a pattern called hare's fur. When Jian wares were set tilted for firing, drips run down the side, creating evidence of liquid glaze pooling.
At the time, tea was prepared by whisking powdered leaves that had been pressed into dried cakes together with hot water, (somewhat akin to matcha in Japanese Tea Ceremony). The water added to this powder produced a white froth that would stand out better against a dark bowl. Tastes in preparation changed during the Ming dynasty; the Hongwu Emperor himself preferred leaves to powdered cakes, and would accept only leaf tea as tribute from tea-producing regions. Leaf tea, in contrast to powdered tea, was prepared by steeping whole leaves in boiling water - a process that led to the invention of the teapot and subsequent popularity of Yixing wares over the dark tea bowls.
Jian tea wares of the Song dynasty were also greatly appreciated and copied in Japan, where they were known as tenmoku wares.

Ding ware
Ding ware was produced in Ding Xian (modern Chu-yang), Hebei Province, slightly south-west of Beijing. Already in production when the Song emperors came to power in 940, Ding ware was the finest porcelain produced in northern China at the time, and was the first to enter the palace for official imperial use. Its paste is white, generally covered with an almost transparent glaze that dripped and collected in "tears," (though some Ding ware was glazed a monochrome black or brown, white was the much more common type). Overall, the Ding aesthetic relied more on its elegant shape than ostentatious decoration; designs were understated, either incised or stamped into the clay prior to glazing. Due to the way the dishes were stacked in the kiln, the edged remained unglazed, and had to be rimmed in metal such as gold or silver when used as tableware. Some hundred years later, a Southern Song era writer commented that it was this defect that led to its demise as favoured imperial ware.Since the Song court lost access to these northern kilns when they fled south, it has been argued that Qingbai ware was viewed as a replacement for Ding.

Ru ware
Like Ding ware, was produced in North China for imperial use. The Ru kilns were near the Northern Song capital at Kaifeng. In similar fashion to Longquan celadons, Ru pieces have small amounts of iron in their glaze that oxidize and turn greenish when fired in a reducing atmosphere. Ru wares range in colour—from nearly white to a deep robin's egg—and often are covered with reddish-brown crackles. The crackles, or "crazing," are caused when the glaze cools and contracts faster than the body, thus having to stretch and ultimately to split, The art historian James Watt comments that the Song dynasty was the first period that viewed crazing as a merit rather than a defect. Moreover, as time went on, the bodies got thinner and thinner, while glazes got thicker, until by the end of the Southern Song the 'green-glaze' was thicker than the body, making it extremely 'fleshy' rather than 'bony,' to use the traditional analogy . Too, the glaze tends to drip and pool slightly, leaving it thinner at the top, where the clay peeps through.

Jun ware
Jun ware was a third style of porcelain used at the Northern Song court. Characterized by a thicker body than Ding or Ru ware, Jun is covered with a turquoise and purple glaze, so thick and viscous looking that it almost seems to be melting off its substantial golden-brown body. Not only are Jun vessels more thickly potted, their shape is much more robust than the fine Jun pieces, yet both types were appreciated at court of Emperor Huizong. Jun production was centered at Jun-tai in Yüzhou city, Henan Province.

Guan ware
Guan  ware, literally means "official" ware; so certain Ru, Jun, and even Ding could be considered Guan in the broad sense of being produced for the court. Strictly speaking, however, the term only applies to that produced by an official, imperially run kiln, which did not start until the Southern Song fled the advancing Jin and settled at Lin'an. It was during this period that walls become so thin and glaze so thick that the latter superseded the former in breadth. As the clay in the foothills around Lin'an, was a brownish colour, and the glaze so viscus, ‘’Guan’’ ware became known for its "brown mouth"  indicating the top rim or a vessel where the glaze is thinner and the body shows through. Guan ceramics have been much admired over the years, and very subject to copy. Indeed Gao Lain spends the greatest part of his commentary on describing Guan and its partner Ge ware , as though that were the most troublesome, least easily identified type of pottery.

Ge ware
Ge , literally means 'big-brother' ware, because legend has it that of two brothers working in Longquan, one made the typical celadon style ceramics, but the elder made ge ware, produced in his private kiln. Ming commentator, Gao Lian claims that the ge kiln took its clay from the same site as Guan ware, which is what accounts for the difficulty in distinguishing one from the other . Overall, Ge remains somewhat elusive, but basically comprises two types—one with a ‘warm rice-yellow glaze and two sets of crackles, a more prominent set of darker colour interspersed with a finer set of reddish lines (called chin-ssu t’ieh-hsien or ‘golden floss and iron threads’, which can just faintly be detected on this bowl: . The other Ge ware is much like Guan ware, with grayish glaze and one set of crackles. Once thought to have only been manufactured alongside Longquan celadon, per its legendary founding, Ge is now believed to have also been produced at Jingdezhen.

While similar to Guan ware, Ge typically has a grayish-blue glaze that is fully opaque with an almost matte finish . Its crackle pattern is exaggerated, often standing out in bold black. Though still shrouded in mystery, many specialists believe that Ge ware did not develop until the very late Southern Song or even the Yuan. In any case, enthusiasm for it persisted throughout the Ming; Wen Zhenheng preferred it to all other types of porcelain, in particular for brush washers and water droppers . Differences between later Ming imitations of Song/Yuan Ge include: Ming versions substitute a white porcelain body; they tend to be produced in a range of new shapes, for example those for the scholar's studio; glazes tend to be thinner and more lustrous; and slip is applied to the rim and base to simulate the "brown mouth and iron foot" of Guan ware.

Qingbai wares
Qingbai wares were made at Jingdezhen and at many other southern kilns from the time of the Northern Song Dynasty until they were eclipsed in the 14th century by underglaze-decorated blue and white wares. Qingbai in Chinese literally means "clear blue-white". The qingbai glaze is a porcelain glaze, so-called because it was made using pottery stone. The qingbai glaze is clear, but contains iron in small amounts. When applied over a white porcelain body the glaze produces a greenish-blue colour that gives the glaze its name. Some have incised or moulded decorations.

The Song dynasty qingbai bowl illustrated was likely made at the Jingdezhen village of Hutian, which was also the site of the Imperial kilns established in 1004. The bowl has incised decoration, possibly representing clouds or the reflection of clouds in the water. The body is white, translucent and has the texture of very-fine sugar, indicating that it was made using crushed and refined pottery stone instead of pottery stone and kaolin. The glaze and the body of the bowl would have been fired together, in a saggar, possibly in a large wood-burning dragon-kiln or climbing-kiln, typical of southern kilns in the period.

Blue and white wares

Following in the tradition of earlier qingbai porcelains, blue and white wares are glazed using a transparent porcelain glaze. The blue decoration is painted onto the body of the porcelain before glazing, using very finely ground cobalt oxide[mixed with water. After the decoration has been applied the pieces are glazed and fired.

It is believed that underglaze blue and white porcelain was first made in the Tang Dynasty. Only three complete pieces of Tang blue and white porcelain are known to exist, but shards dating to the 8th or 9th century have been unearthed at Yangzhou in the Jiangsu province. It has been suggested that the shards originated from a kiln in the province of Henan. In 1957, excavations at the site of a pagoda in the province Zhejiang uncovered a Northern Song bowl decorated with underglaze blue and further fragments have since been discovered at the same site. In 1970, a small fragment of a blue and white bowl, again dated to the 11th century, was also excavated in the province of Zhejiang.

Starting early in the 14th century, blue and white porcelain rapidly became the main product of Jingdezhen, reaching the height of its technical excellence during the later years of the reign of the Kangxi Emperor[38] and continuing in present times to be an important product of the city.

The tea caddy illustrated shows many of the characteristics of blue and white porcelain produced during the Kangxi period. The translucent body showing through the clear glaze is of great whiteness and the cobalt decoration, applied in many layers, has a fine blue hue. The decoration, a sage in a landscape of lakes and mountains with blazed rocks is typical of the period. The piece would have been fired in a saggar  in a reducing atmosphere in a wood-burning egg-shaped kiln, at a temperature approaching 1350 °C.

Blanc de Chine
Blanc de Chine is a type of white porcelain made at Dehua in the Fujian province. It has been produced from the Ming Dynasty (1368–1644) to the present day. Large quantities arrived in Europe as Chinese Export Porcelain in the early 18th century and it was copied at Meissen and elsewhere.
The area along the Fujian coast was traditionally one of the main ceramic exporting centers. Over one-hundred and eighty kiln sites have been identified extending in historical range from the Song period to present. 
The porcelain body is not very plastic but vessel forms have been made from it. lists the following types of product: figures, boxes, vases and jars, cups and bowls, fishes, lamps, cup-stands, censers and flowerpots, animals, brush holders, wine and teapots, Buddhist and Taoist figures, secular figures and puppets. There was a large output of figures, especially religious figures, e.g. Guanyin, Maitreya, Lohan and Ta-mo figures.