BEIJING -?More rain is on the way for South China, where rain-triggered floods have already displaced tens of thousands of people, according to the national observatory forecast on Monday.

Heavy rain and even hailstones will lash southwestern and southern provinces as well as regions along the Huaihe and Yangtze rivers in the next three days, the National Meteorological Center said.

The worst of the rain will come on Tuesday and Wednesday, with some parts of Sichuan, Henan, Hubei, Anhui, Jiangsu and Shanghai likely to see up to 130 millimeters of precipitation, the observatory said.

A week of rainstorms has displaced more than 27,000 people in Hunan Province and over 40,000 in Guangdong Province.