The death toll from floods and landslides in China is now more than 700 and more than 1,100 people are still missing.
Heavy flooding has ripped homes and buildings from their foundations. Rescue teams are digging through thick mud by hand, searching for survivors.
In one remote Chinese town Tuesday, rescuers found a man who had been trapped for more than 50 hours beneath a levelled apartment building.
Workers have been trying to restore power, water, and communications in China's Gansu province after a weekend of heavy rain and swollen rivers.
Meanwhile in Pakistan, thousands fled a central city Tuesday as emergency crews warned swollen rivers could soon submerge the area. Fifteen-hundred people have died in two weeks of flooding in that country.
"It looks like the number of people affected in this crisis is higher than the Haiti earthquake, the tsunami or the Pakistan earthquake. And if the toll is as high as the one given by the government, it's higher than the three of them combined," Maurizio Giuliano, spokesman for the U.N. Office for the Coordination of Humanitarian Affairs, told The Associated Press.
The United Nations estimates more than 13 million people have been affected.