Abstract: The strain energy of the late maximum near and far earthquake events associated with great earthquakes of magnitude over M_s=7.3 occurred on the mainland of China depends on the following factors, namely,(1) The strain energy of the main shock.(2) The strain energy of the near maximum shock occurred on the same day as the main shock.(3) The strain energy of the near maximum shock occurred within 15 days after the main shock.The formulas (9) and (10) give the expressions for actual quantitative calculation.