1. First start ppt, execute the Insert Chart command, and select the first chart in the line chart.

2. Select the chart and execute the animation add animation command to select the erase animation. ?

3. Bring up the animation pane, click the drop-down option in the lower right corner of the animation, and then select the effect option.

4. In the pop-up Erase dialog box, set the direction of the effect to start from the left, switch to the timing tab, and set the direction after the last animation.

5. Then switch to the Chart Animation tab, set the combination chart as a series option, and click OK.

6. Select all animations in the Animation pane and set them as the beginning of the previous item. This completes the animation effect. Press f5 to play the slide show and see the animation effect.