The word 庆幸 is formed by combining two characters, each contributing a layer of meaning to create a specific emotional concept. The first character, 庆 (qìng), fundamentally means to celebrate or offer congratulations, carrying a sense of joyous occasion. The second, 幸 (xìng), conveys the idea of good fortune, luck, or happiness derived from a favorable turn of events. When fused, they produce a compound meaning that is more nuanced than the sum of its parts: it describes the particular feeling of being glad and relieved, a joyful celebration specifically of one's own good luck or a fortunate escape from a negative situation. It’s the emotional synthesis of "rejoice" and "fortunate", capturing that inward sense of grateful elation.