The word 优先 is formed by combining two conceptual building blocks: 优 (yōu), meaning "excellent" or "superior", and 先 (xiān), meaning "first" or "ahead". The formation logic is not merely additive but synthetic; it fuses the idea of "superior quality" with the idea of "temporal or sequential precedence". The resulting compound embodies the concept that what is of superior quality or importance naturally comes first, thereby creating the core meaning of "priority" or "to have precedence". This conceptual blend allows the word to function as a unified idea where excellence justifies and demands precedence.