1. First, establish an AI document; 2. Draw a rectangle with the rectangle tool:; 3. Click the center of the canvas with the Polygon tool and set the number of sides:; 4. Draw two triangles. One is above and the other is below. Reduce the triangle above a little, and set the opacity to 0; 5. Align the two triangles in the center: select the blending tool; 6. Press alt+ left mouse button to set the direction and spacing. The orientation of this effect is the first, and the spacing is the specified number of steps. The more steps, the more natural. But it's too big. . . It is recommended to be within 100; 7. Then select two triangles, click the big triangle with the blending tool, and then click the small triangle. 8. Repeat the previous step and write a letter on it to read the end.