2. Then click the reference option in the menu bar above, and click Insert Caption in the menu bar below.

3. After that, you will enter the subtitle interface. Change the Label option to Graphics, and then click OK.

4. After returning to the main interface, you can see a "Figure 1" logo below the picture.

5. After entering the subtitle interface, click the numbering option, and select ABC as the format in the subtitle numbering interface that pops up.