The word 永生 is formed by conceptually combining two independent characters: 永 (yǒng), which carries the meaning of "perpetual" or "forever", and 生 (shēng), which means "life" or "to live". Their union is not grammatical but ideational, creating a single, fused concept where the quality of "forever" directly modifies the state of "life", yielding the core meaning of "eternal life" or "immortality". It is a direct philosophical and semantic synthesis, where the first character defines the enduring, timeless nature of the existence expressed by the second.