How does 3dmax set the camera route?

click "Line" in "Object Type" in "Graphics" in the Create panel. Pull out the path you need, then open the Modify panel, click Point to select each point with the right mouse button, and select Bezier option to adjust the point in the dialog box, so that this path becomes the path you need.

click the camera button in the create panel, and in object type, click free.

confirm that the camera is selected, and click Animation/Constraint/Path Constraint, and a dotted line will appear to follow the mouse trajectory. Click the curve in the top view, and the camera will automatically move to the curve. Select the "Follow" radio button in the Create panel.

click the rotate button in the toolbar to rotate the camera to a position consistent with the linear direction in the top view.

activate the perspective view, press the c key to switch the camera view, select the camera, open "modify", and set the camera "lens" 25-3. At this time, the browsed space is relatively large.

Set the time to be longer, so that the camera will move relatively slowly, which is beneficial to the roaming effect.

the route will be set according to your own wishes.