Typhoon Meranti has slammed into southeastern China, bringing strong winds and lashing rain and cutting power in what state media said was the strongest storm of the year globally.
There were no immediate reports of casualties.
The storm, registered as a super typhoon before losing strength after sweeping southern Taiwan, made landfall in the early hours near the major city of Xiamen.
Pictures on state media showed flooded streets in some parts of the province of Fujian, where Xiamen is located, fallen trees and crushed cars.
Dozens of flights and train services have been cancelled, state television said, inconveniencing people at the start of the three-day Mid-Autumn Festival holiday.