The word **引入** is a verb formed through the combination of two characters: **引** (yǐn), meaning "to lead" or "to guide," and **入** (rù), meaning "to enter." It follows a common grammatical structure in Chinese where the first character (**引**) denotes the method or action ("leading"), and the second character (**入**) indicates the direction or result of that action ("entering"). Together, they create a compound meaning "to lead in," which semantically extends to "to introduce," "to bring in," or "to import" (e.g., ideas, technology, or capital) from an external source into a new context.