1. Click "Insert" in the menu bar above with the left mouse button, as shown in the red box below;

2. In the shape menu, click the "straight line" icon with the left mouse button, as shown in the red box below;

3. Hold down Shift with the shortcut key, and the horizontal line will pull out a horizontal straight line, as shown in the red box below;

4. The menu bar above the straight line will change accordingly. Click the "left bracket" icon with the left mouse button in the inserted shape, as shown in the red box below;

5. Then drag the mouse to draw a vertical left bracket, as shown in the red box below;

6. Press and hold the "Rotate" icon with the left mouse button and rotate it 90 degrees, as shown in the red box below;

7. Rotate the brace to a horizontal state, as shown in the red box below;

8. Then move the braces to the appropriate position, as shown in the red box below, and input text information according to personal needs.