Jade cong is one of the ritual jades ( the others are bi, huang, kwei, tiger, zhang ). The evolution of jade cong may be observed from the shape and motif aspects. In terms of shape aspect, jade congs have evolved from early Liangzhu Culture’s broader top-narrow bottom shape into late Liangzhu Culture’s and Spring-Autumn period’s equal width top and bottom shape, and further into Warring States’ narrow top-broader bottom jade congs. In terms of motif aspect, jade congs have evolved from early Liangzhu Culture’s deity face to late Liangzhu Culture’s deity face coexists with the crown to Spring-Autumn period’s auspicious cloud or sign to Warring States’ dragon and priest. For a similar article, please read A Timeline of Jade Cong 玉琮年譜.
蘇美文化(c. 2500 BC) 歷代王表石柱酷似中國的玉琮. (right below is the image of Sumerian King List tablet) 玉琮與玉璧, 玉璜, 玉圭, 玉璋, 玉琥同為中國古玉的六瑞.
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