Vary rendering was a technique that controlled lighting and shadow effects by adjusting parameters during the rendering process. To blur the objects in the scene that block the line of sight and only render the lines, you can follow the following steps: 1 Use the Vary Renderer and choose an appropriate rendering mode. Usually, you can choose Single Line mode to render only lines. 2 In the render settings, adjust the parameters in the Light tab. This included parameters such as Illuminated Surface, Shadow Quality, Specular, Reflection, and Diffuse Reflection. These parameters can be adjusted as needed to control the lighting and shadow effects. 3. Adjusts the parameters in the 'texture map' tab. This included the "texture map map" and "texture map filter" parameters. These parameters can control the rendering effect of the texture. 4. Adjusts the parameters in the Lighting tab. This included parameters such as " Light Type,"" Light Strength,"" Light Angles," and " Shadow Type." These parameters could control the lighting effects in the scene. 5 adjust the parameters in the "camera" tab. This included parameters such as " camera position,"" camera alignment," and " camera crop." These parameters could control the camera angle and rendering effects. Through the above adjustments, it could achieve the effect of blurring the objects in the scene that blocked the line of sight and only rendering lines. It should be noted that these adjustment parameters may vary depending on the scene and rendering settings. You need to adjust them according to the actual situation.