Hundreds of thousands of people in central and southern China have been evacuated after days of torrential downpour sparked deadly floods. The Chinese government says flooding in some areas has been the worst the country has seen since 1955. Troops have evacuated about 555,000 people so far. The floods arrived after months of drought that destroyed crops in central and northern China. The country has raised its disaster alert to the highest level, as more heavy rain is expected until Sunday.