The Chinese word 天文馆 (tiānwénguǎn), meaning "planetarium," is a compound formed through semantic combination: 天文 (tiānwén) means "astronomy" or "heavenly bodies/literature," and 馆 (guǎn) means "hall," "building," or "museum." Therefore, the word is constructed logically by combining the concept of "astronomy" with the concept of a "public building," resulting in the meaning "a hall for astronomy," which perfectly describes the function of a planetarium. This follows the common Chinese word-formation pattern of modifier (天文) + head noun (馆) to create a new, specific term.