How did Ann draw a circle to cover up her disappearance?

1. Open AnimateCC and create a new AS3 document.

2. Put the picture on the stage, create a new layer, draw a rectangle on the layer, and convert the rectangle into a movie clip.

3. Double-click to edit, convert the rectangle into graphic elements again, and copy the arrangement of elements as shown in the figure until the content is overwritten.

4. Select all components, right-click and select "Distribute to Layers". At this time, it will be automatically dispersed to various layers, and key frames will be inserted in 1 and 25 frames.

5. Select the middle frame and right-click to create a traditional tween. In the last frame, adjust the height and width of all components to 1, and drag with the mouse to arrange all frames.

6. Return to the main scene, select the rectangular layer, and right-click to select the mask.