Senses
红顶子/ 紅頂子 official hat of the Qing dynasty
(historical) a red gemstone knob on the official hat worn by high-ranking civil and military officials during the Qing Dynasty, or the hat itself
红顶子/ 紅頂子 high-ranking official
(metonymic) a high-ranking official of the Qing Dynasty, often implying prestige or power