Hello, it is recommended to create the ground hole using the free modeling or custom top-wall method. The operations are as follows:

Method 1: Enter free modeling, draw a rectangle, click on stretch, stretch upwards to raise the ground, then draw a small rectangle, click on stretch, stretch downwards, and a hole appears;

Method 2: Top-wall production; Enter custom top-wall - double-click on the ground - click to enter the shape - modify the离地高, then right-click to draw a rectangle/circle - draw the position of the hole, and then modify the bulge value again.