People are used to calling the front face of a car a "grimace" and the front cover a "ghost face". The design of "grimace" has become one of the most important parts in automobile plastic arts, and it is also the most "luminous" or "ugly" part, and it is also the focus that fans pay most attention to when appreciating and evaluating automobiles. Cars-Psychomechanical Animals In the eyes of car fans, cars are psychomechanical animals. You see, its four wheels are four feet, its body is its body, and its flowing fuel is its blood. Of course, "slapping" and stinking exhaust are fart. Look carefully, the headlights are clearly eyeing two eyes, the air inlet under the bumper is like a mouth, the radiator grille of the water tank is a nose, the engine cover is of course a forehead, and the rearview mirrors on both sides are not ears. Of course, the above-mentioned "five senses" are only available in traditional typical cars. In modern cars, there are more and more models with noses and mouths. Famous cars have fixed faces. Most of the faces of cars come from people's creativity. But in the design, some car faces should not be used indiscriminately. In particular, the nose, which can best represent personality, has become the patent of some automobile manufacturers, such as BMW's "double mouth", Mercedes-Benz's "several horizontal and one vertical", Rolls-Royce's "palace pillar" and Alfa's "inverted triangle", which have become the symbols of these automobile families.