Ru Kiln

Overview

Ru Kiln (汝窑) represents the pinnacle of Northern Song Dynasty ceramic artistry and holds the prestigious position as the foremost of the Five Great Kilns of the Song Dynasty (宋五大名窑之首). Renowned for its subtle天青 (sky-blue) glazes and sophisticated craftsmanship, Ru wares were produced exclusively for imperial use during a brief period spanning approximately 20 years during the Northern Song Dynasty (960-1127 CE). The kiln sites were primarily located in present-day Ruzhou (Henan Province), with the most significant discoveries occurring in the Qingliang Temple area of Baofeng County. Ru ceramics are characterized by their elegant forms, refined clay bodies (香灰胎, or incense-ash colored), distinctive crackle patterns (蟹爪纹, crab-claw patterns), and the innovative use of agate in the glaze composition. Today, fewer than 70 complete examples of authentic Ru ware are known to exist worldwide, making them among the rarest and most sought-after artifacts in Chinese art history.

History

The origins of Ru Kiln can be traced back to the Tang Dynasty (618-907 CE), when rudimentary ceramic production began in the Ruzhou region. However, it was during the Northern Song Dynasty that Ru Kiln achieved its greatest prominence. Historical records indicate that Emperor Huizong (r. 1100-1126), an accomplished artist himself, commissioned the establishment of an imperial kiln at Ruzhou to produce ceramics for the exclusive use of the court. This marked the beginning of what is now known as Ru Guan Yao (汝官窑, or Official Ru Ware).

The production of Ru ware coincided with a period of remarkable cultural and artistic flourishing in China. The Song Dynasty witnessed the rise of literati culture and the development of sophisticated aesthetic principles that emphasized subtlety, restraint, and harmony with nature. These philosophical ideals were profoundly reflected in the creation of Ru ceramics, which embodied the era's pursuit of refined elegance and understated beauty.

Tragically, the production of Ru ware was abruptly curtailed in the late Northern Song period due to the invasion of the Jurchen forces and the subsequent fall of the Northern Song Dynasty in 1127. The kilns were destroyed, and the specialized techniques for producing Ru ware were lost, never to be fully replicated despite numerous attempts in later dynasties. The brief duration of official Ru production, estimated at only about 20 years, contributes significantly to the extreme rarity of surviving examples.

Key Information

Cultural Significance

Ru ware occupies a paramount position in Chinese ceramic history and cultural aesthetics. Its production coincided with the flourishing of Song Dynasty literati culture, which emphasized refined taste, intellectual pursuits, and the appreciation of subtlety. The ceramics embody the Daoist principle of harmony between humanity and nature, reflected in their glazes that "take the sky as color" (以天为色) and forms that evoke natural imagery.

The renowned scholar Ouyang Xiu (欧阳修) in his "Return to the Fields Collection" (归田集) praised Ru ware's glaze, noting its most beautiful quality was not the sky-blue but rather the "powder翠" (powder jade-green) that it could exhibit. The contemporary scholar Zhou Hui (周辉) in "Qingbo Magazine" (清波杂志) emphasized that Ru ware's glaze surpassed all other contemporary celadons in its purity, warmth, and subtle luster that resembled ancient jade.

The aesthetic principles embodied in Ru ware influenced subsequent ceramic traditions throughout East Asia and continue to inspire contemporary ceramic artists. The emphasis on glaze quality over elaborate decoration, the appreciation of subtle color variations, and the integration of natural crackle patterns as intentional design elements represent fundamental contributions to ceramic aesthetics that extend far beyond the Song Dynasty.

Modern Status

Ru ware remains among the most coveted and valuable forms of Chinese ceramics in the international art market. The extreme rarity of authentic examples has led to astronomical prices at auction. In 2012, a Northern Song Ru ware sky-blue glazed wash in the shape of a water-chrysanthemum sold at Sotheby's Hong Kong for HK$207.86 million (approximately $26.7 million), setting a world auction record for Song ceramics.

Archaeological discoveries have significantly advanced our understanding of Ru Kiln. The identification of the official Ru kiln site at Qingliang Temple in Baofeng County in 1987 resolved a long-standing mystery in Chinese ceramic studies. Subsequent excavations have uncovered numerous fragments, kiln furniture, and previously unknown vessel forms, providing invaluable insights into production techniques and organizational aspects of the imperial kiln.

Contemporary ceramic artists and researchers continue to attempt recreating the elusive Ru glaze formulas and firing techniques. While modern reproductions can capture some visual qualities of original Ru ware, they rarely achieve the same subtlety of glaze color or complexity of surface texture that characterized the best examples from the Northern Song period. The enduring fascination with Ru ware reflects its status as a perfect embodiment of the refined aesthetic sensibilities that defined China's cultural golden age.

References

1. Sir Percival David Foundation of Chinese Art. (2009). Chinese Ceramics: A Selection from the David Collection. London: British Museum Press.

2. Gompertz, G. S. (1976). Chinese Celadons. London: Faber and Faber.

3. Li, J. & Trethewey, B. R. (1991). Song Ceramics. London: British Museum Press.

4. Rawson, J. (1996). Chinese Pottery and Porcelain. London: British Museum Press.

5. Wang, Q. (1998). Chinese Ceramics: The New Standard Guide. London: Thames & Hudson.