China evacuated 100,000 people from a southern city to escape the surging water in one of three provinces where heavy rains have triggered landslides and floods killing at least 47 people.
Chinese residents evacuate from a flooded area in Wuzhou city.
Floodwater forced the mass evacuation overnight in the industrial city of Wuzhou, where the Xijiang river had reached 25.74 metres last night, more than eight metres higher than the warning level, state media said.
Warning sirens blared in the dark and Wuzhou residents began to load up cars, trucks and carts with valuables to flee to higher ground.
In China's southwestern municipality of Chongqing, around 30,000 residents were also evacuated from an area in Wuxi County after rising water endangered peoples' lives, Xinhua said.
With much of southern China now under threat, Premier Wen Jiabao urged local governments to step up the fight against the flooding, which kills hundreds in China each summer and causes millions of yuan in damage to homes and crops.
Earlier this month, a flash flood swept through a low-lying primary school in northeastern Heilongjiang province, killing 117 people, 105 of them children.
Flooding in Guangxi had killed 27 people and left 20 missing, Xinhua news agency said, citing provincial flood control officials.
More than 330,000 people had been evacuated to higher ground in the region, where the flooding has caused 2.33 billion yuan ($282 million) in economic losses, damaged 328,000 hectares of crops and toppled more than 20,000 houses, it said.
Flooding damaged another 50,000 houses regionwide.