text:  State media say the 11 people confirmed to have perished were recovered from five vehicles that toppled into the river. Nearly 20 more vehicles and over 30 people are still missing. On Saturday, Chinese leader Xi Jinping urged all-out rescue efforts after the disaster. China's been having a rough summer in terms of weather. There's been heavy rain and flooding in the country's south and east. And at the moment, Shanghai, Beijing and other swathes of China are enduring heat waves. John Rewich, NPR News, Beijing.