This article is searching the theory of contemplating the mind of Chin-I; to know the truth of mind by the way of contemplation and to have a restricted view about why mind, Buddha and all sentient beings are the same. There are two key pints: First, exploring the meanings of mind of Chin-I and to point out: Chin-i focuses on the pondering of the mind, but the gathering cores of clear mind, the heart that one of the internal organs of the body in general and the pondering of mind actually aren't different. The mind, the spirit, and consciousness don't separate, and all focus on the sixth knowledge of consciousness skandha in the narrow sense. Second, elucidating the subtle place of contemplating mind of one moment by reaching the meanings of contemplating mind of one moment, who is contemplating, whom is contemplated: Through the practicing of contemplating the Mind we could know clear that the pondering of mind is the the gathering cores of mind, all sentient beings' heart is buddha’s heart, one single mind as three- minds; the mind could be subject and object at the same time.
