What is the appropriate position to adjust the rearview mirror?

[MollyFitz]

Adjust the rearview mirror so that the horizon line is positioned at two-thirds of the mirror's height, and then adjust the edge of the car body to occupy one-fourth of the mirror's image. The rearview mirror is a tool that allows the driver to directly obtain external information about the rear, side, and lower areas of the car while seated in the driver's seat. For the convenience of the driver's operation, to prevent traffic safety accidents, and to ensure personal safety, all countries require that cars must be equipped with rearview mirrors, and all rearview mirrors must be adjustable in direction. For example, the adjustment method for the center rearview mirror is to move it left or right until the left edge of the mirror just cuts off the right ear of your reflection in the mirror. This means that under normal driving conditions, you cannot see yourself in the center rearview mirror. The up and down adjustment involves positioning the distant horizon in the center of the mirror.