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See 'high mountains and flowing water' through a 'gaiwan' setup
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Do you know why the lid of a gaiwan, a traditional Chinese teaware, can hover over its bowl? It's because it's lightweight and a perfect match for the bowl. It can easily hover due to gravity when it's wet. Several gaiwans are arranged in terms of height, with hot water poured into the tallest one, forming a beautiful picture of "high mountains and flowing water." Come and take a look!

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