Citizens change energy-saving light bulbs at home in Jinzhou City, northeast China's Liaoning Province, December 12, 2009. Environmental protection volunteers in the Xitaiping Community of Jinzhou City launch activities among the residents of the community to recycle refuse, save water and energy in their daily life to promote low-carbon lifestyle. [Xinhua]

An environmental protection volunteer puts on a electricity-saving tag above a light switch at a citizen's home in Jinzhou City, northeast China's Liaoning Province, December 12, 2009. [Xinhua]