The word 日志 (rìzhì) is formed by combining two characters to create a conceptually compound idea. The first character, 日 (rì), means "sun" or "day". The second, 志 (zhì), means a "record" or "annals". Together, they construct the metaphor of a "daily record", where each day's events or entries are systematically noted down, much like the sun's predictable, daily passage marks the unit of time being documented. The term visually and conceptually conveys the idea of a sequential, day-by-day log.