The theory of "ups and down" related to yin and yang of heaven and earth in traditional Chinese medicine（TCM） has many logical meanings that mutually exclusive. Under the vision of Xiang thinking

based on the calendar

Yi theory

TCM classics and other literature

we trace the various natural Xiang behind the theory of the ups and down of heaven and earth and the ups and down of yin and yang

and thus identify the causes of contradictory opinions within the two theories of ups and down. Under the guidance of the holistic view

we further explore in-depth internal and unity relationship between the two theories. It is believed in the conclusion that it is necessary to understand the internal relationship between the source of the natural phenomenon behind the concept and philosophical level at the same time. On this basis

we clarify the hidden boundaries such as the perspective level

the subject object

and the focus of the concept when it is applied.