Houses immerse in the flood in Tieling County, north China's Liaoning Province, July 21, 2010. Due to heavy rainfall, a 20 meters' riverbank burst appeared at 4:30 AM at Tieling County's Aji section of the Shengli River, a branch of the Liaohe River, on Wednesday. More than 3,000 people had been evacuated. [Xinhua]