Torrential downpours in China have now claimed 64 lives, state media reported, with flash-floods destroying thousands of homes as well as bridges and large swathes of crops.The southwestern province of Guizhou was hardest hit, with 43 people killed in floods, Xinhua news agency reported late Friday, after a new downpour on Thursday flooded 19 cities and counties.More than 130,000 people were affected by the continuing bad weather, which also knocked out two bridges and a highway, according to earlier Xinhua reports.Torrential rain has also hit four other provinces in the past four days, killing 21 people.