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Cultural heritage: Sticky rice helps repair stone at UNESCO site Jiuzhaigou
02:33

The stunning alpine lakes of Jiuzhaigou in southwest China's Sichuan Province have seen it named a UNESCO Natural Heritage site. But six years ago, the area was damaged by a magnitude-7.0 earthquake. This World Natural and Cultural Heritage Day, our reporter Guo Tianqi went there to see how sticky rice flour and other natural materials have been used to restore Jiuzhaigou to its natural beauty.

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