A partially transparent version of the cube

The cube that you see in Figure 5 is the same cube that you saw in Figure 1.  But:

Figure 1 shows the 3D axes belonging to the cube.

Figure 5 shows the 3D axes belonging to the grouned.

The cube in Figure 1 is 100% opaque.

The cube in Figure 5 is only 50% opaque.

This makes it possible to see the 3D axes belonging to the ground showing through the cube.

(The cube in Figure 5 is 50-percent transparent.  Opacity and transparency are the reverse of one another.)