The current national seismic zoning map of China mainly considers long-term seismic hazard which is usually used in seismic fortification for general buildings. The time-dependent seismic zoning map which considers the time nonstationarity of earthquakes usually shows medium-term seismic hazard and plays a role in seismic emergency preparedness. -- Prof. Mengtan Gao Institute of Geophysics China Earthquake Administration Chief Scientist of Seismic Zoning Map of China (GB 18306-2015)