Ji (几) refers to an omen indicating the emerging or changing of things. Ancient Chinese believed that a subtle omen would appear before something new emerged or when something old was about to change, or before the differentiation of good and evil in human nature occurred. An omen is either visible or hidden inside something old. One should develop the ability to identify and use an omen. When one is adept at identifying an omen that something is emerging or changing and makes use of it at the appropriate moment, one can foresee and grasp the way things emerge and change, thus pursuing the desired course and avoiding harm.
Shi (时 time or timing) has the following three meanings: First, the sequence or rules of heaven’s way, such as spring, summer, autumn, and winter; or hours that mark changes of time during day and night; Second, a certain celestial phenomenon or climatic condition having impact on human activity, such as seasons for farming or timing for other activities; Third, the right time or opportunity that emerges in the course of human activity. The emergence or disappearance of timing is governed by the rules of heaven’s way or human behavior. People should gain a good understanding and master time or timing and their manifested rules and act in a way commensurate with them.
The term refers to the fundamental state of the existence of things. Bian (变) and hua (化) may be used as one word or separately. Specifically, bian means manifest change, while hua indicates subtle and gradual change. Ancient Chinese thinkers generally held that all things under heaven and on earth, including humans and society, are all in a state of change. Only through constant change can they permanently exist and develop. Change is caused by constant clash and integration between the conflicting properties with which people and things are endowed. Some scholars believed that change follows a constant law and can thus be understood and grasped, while others maintained that change is unpredictable and therefore difficult to grasp. Buddhism, on the other hand, holds that changes of things are only superficial, and that all things are still and motionless.
The term stands for perpetual change. According to The Book of Changes, shengsheng (生生) can be understood at two levels. First, in regard to the existence of all things, it is the interaction of yin and yang that drives the process of the endless cycle of birth, rebirth, and change of heaven, earth, and all things. This process is a fundamental attribute of the universe, and the source of ethical behavior. Second, as a term in divination, it refers to the alternation of yin and yang lines and the fact that all elements in the symbol system of The Book of Changes are in a perpetual state of change.
This term means one should not only have a good command of the basic rules that govern things, but also know how to deal with exceptional situations or problems in a flexible manner. It suggests that one should not just adhere to principles, but also act according to circumstances. Chang (常permanence) and bian (变change) are two opposing concepts in ancient Chinese philosophy. The nature of things that decides what they are, and their basic rules or general principles that are relatively stable are called chang (permanence); but when it comes to specific situations or ways to deal with them, they are different and change in different circumstances, thus they are called bian (change). Relative to change, permanence is what endures within change. Permanence is fundamental while change is a deviation. Therefore, one needs not only to have a good command of the basic rules and general principles of things, but also know how to apply these rules and principles in a flexible manner according to objective circumstances. The mastery of both permanence and change reflects ancient Chinese people’s perception of both generality and particularity as well as principles and flexibility. It also shows their methodology in the application of both.