Global warming has already made extreme precipitation more intense in the East Asian region, including in China.
Parts of southern China received their heaviest downpours in 60 years this weekend.
Heavy rains caused floods and landslides in at least seven provinces, damaging homes, crops and roads.
75 rivers reached emergency levels in 24 hours.
In Guizhou province, rivers have flooded the roads, sweeping away cars and houses.
Precipitation in the provinces of Guangxi, Guangdong and Fujian reached its highest level since 1961.
Rescue teams were sent to Guangdong and Guangxi to provide assistance.
In total, more than 300,000 people were evacuated during this period.
Extreme weather has already caused more than $400 million in damages.
Heavy rain is forecast to continue until Tuesday in the southern provinces before moving north.
The record rainfall comes amid China's efforts to combat climate change.
