At least 13 persons have lost their lives and more than one million others have been evacuated from their homes because of Typhoon Lekima.
Another 16 persons are still unaccounted for after the storm caused a mud avalanche in Wenzhou.
The typhoon is expected to hit Shanghai, home to some 20 million inhabitants.
The authorities are working flat out to rescue those caught up in the storm, which caused a major disaster with uprooted trees and loss of power.
The typhoon is advancing on Shanghai at a velocity of 187km/h (116 mph).
More than 1,000 flights, as well as rail services, have been cancelled as a precaution.
Lekima is the ninth typhoon which has hit China this year, and has brought with it the strongest ever storm.