Local residents talk about a mass poisoning incident that took place at a high school in 2008 in Jianping county, Northeast China's Liaoning province Jan 20, 2011. Affected families have sought to sue local government departments for poorly handling the incident and dodging their repeated requests for transparency. A manufacturer of furfural, a chemical used as both a solvent and a fungicide, located within 1 kilometer of two schools may have been responsible for two poisoning incidents. [Photo/Xinhua]

A pedestrian walks during snowfall in Shanghai Jan 20, 2011. China's National Meteorological Center and the Shanghai Meteorological Bureau issued a warning for heavy snowfall in Shanghai for last Thursday and Friday. [Photo/Agencies]