【明報專訊】Floods in southern China and droughts in the north are disasters common on the mainland in summer. This year, however, has seen particularly serious situations. Incessant heavy rains in many southern regions have caused flooding and landslides in places such as Guangdong, Fujian and Guangxi, causing dozens of casualties and property losses. In some northern regions, persistent heat waves and severe drought are impacting grain sowing for the autumn yield, and threatening this year's grain harvest.