Swiss man Freddy Nock walks on 300-meter-high steel wire in Wulong county of Southwest China's Chongqing on March 30, 2016. He finished the 100 meter walk within 42.04 seconds on the 300-meter-high steel wire in the challenge "Running Wireman" above the world natural heritage site in Wulong county of Chongqing. [Photo/China Daily]
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