The door first uses the doughnut shape that comes with the maya model, then selects the face and deletes half. Then select a circle of thread at the incision and extrude it, and it will be formed. If you want to make the bump obvious, you can only add three lines to the gap of each brick, and then squeeze the middle one in, and the gap will be obvious. I happened to have done this scene before, hehe.

What do you need to use the line card and the drawing, the accuracy of the drawing and the angle of the lens. The same is true for making scenes as soon as possible. In order to save resources, patches are used everywhere the lens can see, and the back is completely empty. When rendering my scene, all surfaces except this angle are deleted. Surface seams need line cards like big seams, and small lines depend on mapping. If you rely entirely on the map, it will be effective, but it will be ugly if the camera is close. Try to understand this for yourself.