BEIJING - Heavy rain will hit much of China in the next two days, the country's meteorological authority said Sunday.

Torrential rain will sweep parts of south China's Guangxi Zhuang Autonomous Region and Guizhou Province as well as the central province of Hunan and the eastern province of Jiangxi on Sunday, according to the National Meteorological Center (NMC).

The NMC renewed a blue alert for rainstorms in those regions on Sunday.

On Monday, downpours will continue to hit some areas of Guangxi and Hunan, the NMC forecast.

Certain parts of north and northeast China will also see thunderstorms from Sunday to Monday.

The NMC reminded local residents to halt outdoor work and take precautions against mountain torrents, landslides and mud-rock flows.

China has a four-tier color-coded weather warning system, with red the most severe, followed by orange, yellow and blue.