I. Historical background, reason and purpose 1, historical background = (domestic+international) (economy+politics+culture +...) 2. Historical conditions: basically the same as background analysis. Pay more attention to favorable factors. 3. Cause breadth: Cause = subjective (internal cause)+objective (external cause). 4. Depth of cause: cause → direct → main → fundamental. 5. Contradiction analysis: contradiction between productive forces and production relations, contradiction between economic base and superstructure, class contradiction, intra-class contradiction, ethnic contradiction, religious contradiction, contradiction between different interest groups ... 6. Purpose and motivation. Historical content = economy+politics+culture +... 1, Economic content: productivity+relations of production+economic structure, layout +...2, political content = system+system+policy+class+nationality+diplomacy+military +...3, cultural content = natural science+social science+cultural exchange+... significance and lessons 1, nature analysis: task+leadership+.