公函 gōnghán HSK7 official letter Definitions Defs Origin Strokes Stroke Words Sentences Sents gōnghán official letter 公 gōng noun official (bound form) official business; government duties函 hán noun letter (literary or formal) a letter; correspondence; official documentgōnghán collective letter 公 gōng nounadjective public belonging to the state, community, or public; collectively owned as opposed to private; shared by all函 hán noun letter (literary or formal) a letter; correspondence; official document