What a person needs when facing the outside world is a window; What a person needs when facing himself is a mirror. Facing the outside world, you can see the light of the world with a window, while facing yourself, you can see your own stain with a mirror. -Lin Qingxuan's "Window and Mirror" mirror, so the shape appraisers also have a glimpse of it; Therefore, the past is a mirror of the mind, from which both good and evil are saved. -Don Zhang Jiuling's The Golden Mirror of the Millennium Sacrifice. Jane: According to. Yan () Gu (ChρEat): Beauty and ugliness. Province (xǐng wakes up): Look. Mirrors are used to reflect the human body, and beauty and ugliness can be revealed; The past is used to reflect people's hearts, and both good and evil can be reflected in their hearts.