Which is better, grinding mud and waxing or polishing and waxing?

1, the advantages of grinding mud and waxing are that it can prevent water and acid rain, reduce the amount of water droplets attached to the car body, and prevent the aging and fading of car paint caused by high temperature and ultraviolet rays by refracting some light.

2. The advantage of polishing and waxing is that it can make the surface of car paint very beautiful and shiny, and it can also handle the scratches on the surface of the car, even if the scratches are serious.