The Chinese word 情书 (qíngshū), meaning "love letter," is a compound formed by combining two independent characters: 情 (qíng), which signifies "feeling," "emotion," or specifically "love," and 书 (shū), which means "book," "document," or more broadly in this context, a "written letter." The formation follows a common grammatical structure in Chinese known as a *modifier-head* or *attributive* compound, where the first character 情 acts as an adjective modifying the second character 书, specifying it as a "letter of emotion" or a "letter pertaining to love." This logical semantic combination creates a new, specific meaning that is immediately intuitive to a Chinese reader.