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.