Why do the mirrors in the subway make people look so ugly?

The reason why the mirrors in the subway make people look so ugly is because the coating on the surface of the mirror is uneven and uneven. It will be distorted when reflecting light, so it will uglify people. The subway is a form of railway transportation. Refers to the urban rail transit system that mainly runs underground, that is, the abbreviation of "subway" or "subway" (Subway, tube, underground).

In order to adapt to the construction environment and consider construction and operating costs, many of these systems may be converted to ground or elevated sections outside the city center. Subways cover various underground and above-ground sections in urban areas. An urban rail transit system (Metro) with exclusive right-of-way, high density and high traffic volume, which Taiwan Metro in China calls "MRT".

In addition to the subway, it also includes elevated railways or railways laid on the road. Therefore, the subway has exclusive right of way and no level crossing. This is also a fundamental sign that the subway is different from the light rail transportation system. The earliest (and first) subway in the world is the Metropolitan Subway in London, England, which was built in 1863.

Subway models refer to the models of vehicles used in subways (urban rail transit). Generally speaking, there is no unified standard for subway models around the world. They are often customized according to the needs of a certain place's subway, such as The A and B systems of the New York subway. In mainland China, subway models are often divided into three types: A, B, C, and L type.