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Locals ride bicycles during a public awareness event to mark the Car-Free Day in Haikou, capital of south China's Hainan Province, on Sept. 22, 2009. This Tuesday is China's third Car-Free Day and people are encouraged to walk, ride bikes or take buses instead of driving their cars. [Guo Cheng/Xinhua]
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![Locals ride bicycles during a public awareness event to mark the Car-Free Day in Haikou, capital of south China's Hainan Province, on Sept. 22, 2009. This Tuesday is China's third Car-Free Day and people are encouraged to walk, ride bikes or take buses instead of driving their cars. [Guo Cheng/Xinhua]](http://images.china.cn/attachement/jpg/site1007/20090923/000cf1a48b7f0c23b74c02.jpg "Locals ride bicycles during a public awareness event to mark the Car-Free Day in Haikou, capital of south China's Hainan Province, on Sept. 22, 2009. This Tuesday is China's third Car-Free Day and people are encouraged to walk, ride bikes or take buses instead of driving their cars. [Guo Cheng/Xinhua]")
