A visitor scans quick response codes (QR code) on a piece of napkin with the introduction of the West Lake on it with a cellphone in Hangzhou, capital of east China's Zhejiang Province, March 4, 2014. Hangzhou has printed a special kind of napkin for its visitors, on which there is a traveling map for the Leifeng Tower scenic spot and also two quick response codes (QR code) by scanning which visitors can get the voice introduction of the scenic spot and download pictures. (Xinhua/Hu Jianhuan)

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