The Zhusuan, otherwise known as the Chinese abacus was listed as an intangible cultural heritage at the 8th Annual UNESCO World Heritage Congress on Dec 4, 2013. (Photo by Wang Kaihao/China Daily)
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The Zhusuan, otherwise known as the Chinese abacus was listed as an intangible cultural heritage at the 8th Annual UNESCO World Heritage Congress on Dec 4, 2013. (Photo by Wang Kaihao/China Daily)
