A citizen attends the quiz game at a park in Nanchang, capital of central China's Jiangxi Province, December 5, 2009. About 100 college students from 7 universities in Nanchang initiated a series of events called "Campaign of 20" on Saturday, arosing citizens' attentions on global climate change and calling on the low-carbon life.  [Xinhua]

A man watches a waste exhibition with his daughter at a park in Nanchang, capital of central China's Jiangxi Province, December 5, 2009. [Xinhua]