Investigation of qi and qi field of human body

In this paper, the construction, the quality, the characteristics and the evolution of the field of human body are discussed according to the actual observations of Chinese qigong exercise and qigong medical practice. It is shown that the field of human body is different from any other physical fields known to us. It has many characteristics, such as the complexity and the completion of the construction, the open property, the variety, the holo-information and correlation, the classifility, the controllability of the mind and the nature, the life-information property, etc.