The Chinese word 拘束 is a compound formed by combining two characters with related meanings: 拘 (jū), which conveys the idea of detaining, restricting, or being inflexible, and 束 (shù), which means to bind, tie, or restrain. Together, they create a coordinated binomial compound where each component reinforces the other, producing the abstract and psychological meaning of "constraint," "restriction," or "feeling ill at ease." The term thus evolves from the literal notions of physical binding and detention to describe a state of social or emotional inhibition, where one feels bound by formalities or internal pressure.