Spring rainfall showers Beijing Two cars run in the rainy night in Beijing, capital of China, April 10, 2012. The Spring rain, which hit B...

Spring rainfall showers Beijing

Two cars run in the rainy night in Beijing, capital of China, April 10, 2012. The Spring rain, which hit Beijing on Tuesday, is believed to be conducive to the growth of crops and air cleaning. (Xinhua Photo)

Passengers wait at a bus station in the rain in Beijing, capital of China, April 10, 2012.The Spring rain, which hit Beijing on Tuesday, is believed to be conducive to the growth of crops and air cleaning. (Xinhua Photo)

A rain hits Beijing on April 10, 2012. The Spring rain is believed to be conducive to the growth of crops and air cleaning. (Xinhua Photo)

Tourists watch flag-lowering ceremony at Tiananmen Square in Beijing, capital of China, in the rainy twilight on April 10, 2012. The Spring rain is believed to be conducive to the growth of crops and air cleaning. (Xinhua Photo)

Tourists watch flag-lowering ceremony at Tiananmen Square in Beijing, capital of China, in the rainy twilight on April 10, 2012. (Xinhua Photo)

Lights glitter in the rainy night in Wangjing street, Chaoyang District, Beijing, capital of China, April 10, 2012. The Spring rain, which hit Beijing on Tuesday, is believed to be conducive to the growth of crops and air cleaning. (Xinhua Photo)

The Spring rain, which hit Beijing on Tuesday, is believed to be conducive to the growth of crops and air cleaning.