Buildings are blanketed by black clouds in Yantai City, east China's Shandong Province, December 4, 2008. The city suffered this winter's strongest cold front on Thursday, with strong wind and sharp drop of temperatures.

A boy plays with snow in Shenyang, capital of northeast China's Liaoning Province, December 4, 2008. The heaviest snowfall and strongest cold front this winter hit Liaoning Province along with many parts of the country since December 3 and brought down the temperatures to between minus 8 and minus 22 degrees Celsius in Shenyang on December 4.

(Xinhua News Agency December 4, 2008)