"Eye of the sky" has two explanations:
1. The root of the human eye is called the naked eye, and the eye of heaven and man is called the eye of heaven, both of which are color methods. The quality of the celestial eye is extremely subtle, and it can see things invisible to the naked eye. For example, the naked eye can't see the inside of the table, see the rough but not the fine, see the front but not the back, see the near but not the far, see the bright but not the dark; However, the eye of heaven has seen the inside and outside, thickness, front and back, distance, light and shade.
2. "Eye" is not the eye we usually understand, but the abstract realm "eye". The Buddha can see what ordinary people can see, with the naked eye; See the realm seen in the sky, the distance between inside and outside, and so on. , is the eye of the sky; It is an eye to enter the emptiness without me; The eyes of the law know everything; What you see is the Buddha's eye.