The Chinese word 还债 (huán zhài), meaning "to repay a debt," is a compound word formed through a straightforward verb-object grammatical structure. It combines the verb 还 (huán), which means "to return" or "to give back," with the noun 债 (zhài), meaning "debt" or "obligation." The construction logically follows the action-and-target pattern common in Chinese, where the first character denotes the action (repaying) and the second character specifies what is being acted upon (the debt), creating a clear and functional semantic unit.