Dark clouds hang in the sky in Beijing, capital of China, June 3, 2012. A thunder shower hit the Chinese capital on Sunday. [Photo/Xinhua]

People walk across the improvised bridge made of "desks" to avoid water in Wuhan, Central China's Hubei province, May 29, 2012. Heavy rain hit Wuhan, flooding most streets in the city, paralyzing traffic and affecting residents' lives. [Photo/CFP]