The article covers the questions of cosmic and natural phenomena, identity, cyclic nature and parallelism of their constant changes. The authors regard it as a starting point for giving definitions to fundamental terms in Canon of Changes (Yi jing) which is a methodological basis of Traditional Chinese Medicine (TCM); law of dynamic alternation of Yin and Yang, their cyclic regularity, succession, constancy and symmetry at any level of organization of the being; concept of changes as a function of movement; origin and numerological value of fundamental numerals and characters: the energy images of Canon of Changes; their mutual definition and mutual derivation as well as synchronizing indivisibility.