利用

The application of a resource, person, or strategy to advantageous effect. It denotes optimal functionality where the employment of a means is aligned with a successful outcome.

Depending on syntax, the term typically functions in two capacities:

1. Evaluative/Descriptive: A predicate or noun phrase describing an action or tool as a "beneficial use" or "advantageous application."

2. Prescriptive/Formulaic: An introductory trigger for a recommendation (common in divinatory or strategic texts), functioning as a modal expression: "It is favorable/advantageous to [do X]."

While 用 (yòng) refers to general utility, the addition of 利 (lì) specifies that the use is successful, profitable, or strategically sound. In early philosophical or divinatory contexts, it may signal harmony between the actor's intent and external circumstances.

In the Yi Jing, this term is frequently formulaic, marking the transition from a description of a situation to a practical directive.

Caution: Avoid translating as "exploit" or "utilize" if those terms carry modern connotations of opportunistic or unethical use; in classical contexts, the term is generally neutral or positive.