PrefaceChapter 1 An Overview of Space-time Symmetry of Major Natural Disasters1��1 A Review of Research on Space-time Symmetry ofDisasters1��2 Research Content�� Research Objectives and Key Scientific Problems to Be Solved1��3 Research Approach and Feasibility Analysis1��4 Progress in Disaster Symmetry Research1��5 Preliminary Analysis ofNatural Commensurability and Its MechanismsBibliographyChapter 2 Space-time Symmetry of Strong Earthquakes in the Western Pacific2��1 Symmetrical Space-time Structures of Strong Earthquakes in the Western North Pacific2��2 Symmetrical Space-time Structures of Strong Earthquakes in the Indonesian Island Arc2��3 Symmetrical Space-time Structures of Strong Earthquakes in Fiji2��4 Symmetrical Space-time Structures of Strong Earthquakes in Taiwan�� ChinaBibliographyChapter 3 Space-time Symmetry of Strong Earthquakes in the Eastern Pacific3��1 Space-time Symmetry of Strong Earthquakes in Mexico3��2 Space-time Symmetry of Strong Earthquakes in Chile3��3 Space-time Symmetry of Strong Earthquakes in Alaska�� USABibliographyChapter 4 Space-time Symmetry of Strong Earthquakes in the Western Eurasian Seismic Belt4��1 Space-time Symmetry of Strong Earthquakes in Italy4��2 Space-time Symmetry of Strong Earthquakes in IranBibliographyChapter 5 Space-time Symmetry ofEarthquakes in Mainland China andIts Adjacent Area5��1 Space-time Symmetry of Strong Earthquakes in Sichuan-Yunnan Region�� China5��2 Space-time Symmetry of Earthquakes in Xinjiang�� China and Its Adjacent Area5��3 Space-time Symmetry of Earthquakes in the Himalayas5��4 Space-time Symmetry of Earthquakes in the Fen-Wei Basin5��5 Time Symmetry ofEarthquakes in Beijing-Tianjin-Tangshan Region�� ChinaBibliographyChapter 6 Research Results�� A Collection of Verified Cases6��1 Trend Judgment ofNatural Disasters in the Exploration Stage6��2 Trend Judgment ofMajor Natural Disasters in the Research Stage6��3 A Summary of Research on Trend Judgment of Major EarthquakesBibliography