Qi can be divided into tian qi and di qi

which is demonstrated in doctrine of five evolutive phases and six climatic factors and its connotation varies with the context. By analyzing the theory

this paper combed the connotation of tian qi and di qi

and divides them into a broad and narrow sense. Broad sense of tian qi and di qi is the qi of natural

narrow sense of tian qi and di qi individually refers to five evolutive phases and six climatic factors

the relationship between six kinds of natural factors and heavenly stems and earthly branches

the two parts of a stage of qi

the two parts of the year’ s qi

celestial manager qi and qi in the earth. It has important guiding significance to the study and theory research of five evolutive phases and six climatic factors.