At least 173 people have been killed and 126 are listed as missing.
The country's fourth typhoon this year was detected 510 km off the coast of Manila at 5:00 pm today and will land in Guangdong on Tuesday, the National Meteorological Centre (NMC) said.
The wind speed could reach 38-45 meters per second when the typhoon makes landfall, according to the NMC.
China has a four-tier, colour-coded weather warning system, with red representing the most severe weather, followed by orange, yellow and blue.