The word **事事** (shìshì) is formed through the grammatical process of **reduplication**, where the single character **事** (shì), meaning "matter," "affair," or "thing," is repeated. This repetition transforms the meaning from a singular, concrete "matter" to a plural and generalized sense of "everything" or "all matters." In terms of phonology, the tone of the second character typically becomes neutral (light), shifting from the fourth tone (shì) to a lighter *shi*. Structurally, this AA-pattern reduplication creates an adverbial or pronominal word that functions to express comprehensiveness, as in the common phrase **事事关心** (shìshì guānxīn), meaning "to be concerned with all affairs."