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A proto-porcelain dating back to Shang Dynasty (1600 B.C. - 1046 B.C.) was unearthed at an archeological site in Xinzheng, central China's Henan Province on Jan. 12, 2011. It is China's earliest porcelain so far, according to an expert at the excavation site. (Photo by Wang Zhongjv, China News Agency)