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People are only just realising what those tiny windows in the pavement are for but some still don't believe it | The Sun
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The Floor In This House Is Filled With Glass Circles That Allow Light To Pass Through To The Floor Below
![Workers replace glass pavement at Tianmenshan scenic area in China's Hunan - Xinhua | English.news.cn Workers replace glass pavement at Tianmenshan scenic area in China's Hunan - Xinhua | English.news.cn](http://www.xinhuanet.com/english/2018-03/21/137055359_15216403241661n.jpg)
Workers replace glass pavement at Tianmenshan scenic area in China's Hunan - Xinhua | English.news.cn
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