The word **打入** is formed by combining two individual characters: **打** (dǎ), meaning "to hit" or "to strike," and **入** (rù), meaning "to enter." Together, they create a compound verb whose meaning extends metaphorically beyond the simple sum of its parts. While literally it could imply "hit into," its actual usage conveys the figurative sense of "to enter or penetrate into," often with force, strategy, or effort, such as infiltrating a group (**打入内部**), breaking into a market (**打入市场**), or being sent into a situation (**打入冷宫**). This formation exemplifies how Chinese compounds frequently use concrete action verbs to express more abstract or nuanced concepts.