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Efficient learning and building a personal systematic knowledge system is a systematic and continuous process, which plays an important role in personal growth, career development, problem solving and other aspects. This article will explain how to use the SMART principle to set goals and use a variety of learning methods such as mind mapping learning method , Cornell note method, Feynman learning method, etc. to build a personal systematic knowledge system.

Venn diagram is a relationship chart used to display overlapping areas of sets, commonly used in fields such as mathematics, statistics, logic, etc. The Venn diagram represents the intersection relationship between sets or the possibility of different sets intersecting through the stacking of shapes (usually circular or elliptical). This article will explain how to use ProcessOn to draw Venn diagrams.