The Evolution of Underglaze Blue and Red (Yongzheng)

 

Few ceramic traditions have achieved the visual authority of Chinese porcelain decorated in underglaze blue and underglaze red. Painted onto the unfired—or “bisque”—body before the transparent glaze is applied, these pigments become sealed beneath the surface and emerge transformed by the kiln.

Underglaze blue entered Chinese ceramic production in a sustained and influential form during the Yuan dynasty (1271–1368), especially in the fourteenth century.

The use of imported cobalt, probably from Islamic lands, enabled painters to create powerful designs of dragons, peonies, scrolling foliage, and narrative scenes.

The technique reached an early artistic perfection in the Ming dynasty, particularly under the Xuande emperor (1426–1435), whose porcelains are celebrated for their rich, luminous blue and assured brushwork.

It was refined again during the Kangxi period (1662–1722), when tonal gradation and painterly naturalism became especially sophisticated.

Underglaze red, made primarily from copper compounds, was more technically demanding. Copper is volatile in the kiln: too much oxygen can turn it green or gray, while reducing conditions may produce a vivid crimson.

Early experiments appeared in the Yuan and early Ming periods, but the color was notoriously inconsistent. It was particularly admired in the Xuande era, when imperial kilns produced some of the most successful early examples. Yet underglaze red remained less dependable than blue and was repeatedly reinterpreted by later craftsmen.

The Yongzheng period (1723–1735) brought a distinctive refinement. Yongzheng porcelains are typically more restrained, elegant, and intimate than the grander productions of the Kangxi and Qianlong eras.

Their forms are finely proportioned, their decoration carefully spaced, and their blue often soft, delicate, and ink-like rather than aggressively saturated. Underglaze red, though still difficult, appears with unusual control in small, precisely painted motifs—flowers, bats, peaches, or archaic designs.

By contrast, Kangxi pieces often emphasize technical virtuosity, varied blue tones, and vigorous compositions, while Qianlong porcelains frequently favor elaborate ornament, ambitious shapes, and dense visual effects.

Yongzheng’s achievement lies elsewhere: a cultivated balance of color, white space, and brushwork. In these works, underglaze blue and red are not merely pigments; they become instruments of imperial taste—quietly luxurious, technically exacting, and exceptionally refined.

Underglaze blue and red reveal centuries of experimentation, imperial ambition, and artistic discipline. From bold Yuan designs to Yongzheng’s poised refinement, each period speaks through color, kiln, and brushwork.

For collectors, the challenge is not simply identifying beauty, but recognizing its historical voice: which porcelain era speaks most compellingly to you?

Source: www.youtube.com/watch?v=S4G34ajbPHk