Several viewpoints about Large Earthquake of M7.0 in Earthquake Zone of North China in the Future

The seismic region of North China has already entered the later phase of the fourth active period which began from A.D.1000.In order to discuss if strong earthquakes of M≥7.0 are possible to occur in seismic region of North China in the later phase of the fourth active period,examples related to strong earthquakes of M≥7.0 in seismic region of North China are studied.The result indicates that four strong earthquakes of M 6.0 occurred in seismic region of North China since 1989,four moderate earthquakes occurred in Xinding basin,Linfen basin and Weihe basin of Shanxi seismic belt and three deep earthquakes of M 7.0 occurred in Northeast China since 1994 are related to strong earthquake of M 7.0 in seismic region of North China in the future.The seismic region of North China would be in a dangerous period,five years or longer to come,in which some strong earthquakes of M 7.0 would occur.The normal stress and static Coulomb's failure stain shock's.