Photo taken on Aug 17, 2012 shows lightning above buildings as Typhoon Kai-Tak approaches in Nanning city, capital of South China's Guangxi Zhuang autonomous region. Kai-Tak is forecast to make landfall in coastal regions of South China's Guangdong province at noon or during the morning of Friday, bringing heavy rain and gales to the country's southern parts, according to China Meteorological Administration. [Photo/Xinhua]