The word "一瞬间" is formed by combining three characters to create a vivid, metaphorical image of an extremely brief moment. It begins with "一" (one) to establish a single unit, attaches it to "瞬" which visually and conceptually represents the blink of an eye or a twinkling, an ancient and cross-cultural symbol for a fleeting instant. This combination is then framed within "间", which denotes a space, interval, or slice, thereby finalizing the concept as "a single slice of a blink", poetically crystallizing the idea of a momentary fragment of time.