South CASS7. 1 does not display the ground object drawing menu, which is caused by a wrong setting. The solution is as follows:

1. First open cass in the computer, and you will find that the feature editing window is missing, as shown in the figure.

2. Click "Display" at the top of the page, and then select the "Feature Drawing" menu, as shown.

3. If it is not displayed yet, you can also right-click the option button in the drawing interface, as shown.

4. Then in the options interface, select Display, put a box in front of the displayed screen menu, click Apply, and click OK, as shown in the figure.

5. After all operations are completed, reopen cass9, and you can see the dialogue interface of ground objects, as shown in the figure.