1, understand the pattern composition method. In the application of visual psychology of points, lines and surfaces, points are regular and irregular. Positive acupoints include round acupoints and square acupoints, among which round acupoints give people the feeling of completeness, fullness, cohesion and movement.

2, understand the color composition method. The interaction of colors is based on people's perception of colors and psychological effects, and complex color phenomena are restored through scientific analysis.