A flash flood killed nine people and left 11 others missing in southwest China's Guizhou province, state media said Tuesday, as thunderstorms also threatened neighbouring quake-hit Sichuan. Torrential rain hit nine townships in the Guizhou county of Wangmo on Monday evening that caused the flood, Xinhua news agency quoted the Emergency Response Office of the local government as saying. The flood destroyed 58 houses, two bridges, a highway, and power poles, causing blackouts in eight townships, affecting 26,000 people, Xinhua said.