The Madman on the Dividing Line Between Yin and Yang

Everything in the world pays attention to the balance of yin and yang. Where there is sunshine, there must be shadows, and where there are shadows, there must be sunshine. When you are in the sun, you will see the shadow in the corner, and the sun is so dazzling in the shadow. So if you are outside the boundary of yin and yang, will you see a more real world? When you see the truth of this world, have you become a lunatic, or are you the only one who is sane in this world?