A student of China's Renmin University holds a banner which reads "hoping deputies of the National People's Congress (NPC) and the Chinese People's Political Consultative Conference (CPPCC) will give more concerns to environmental pollution" during the two sessions of NPC and CPPCC in Beijing, March 9, 2010. [Photo/Xinhua]

People participate in a car-free day at Wulihe Park, Shenyang, capital of Northeast China's Liaoning province, Sept 22, 2011. [Photo/Xinhua]