hiông-piǎn雄辯

convincing argument

convincing argument; eloquent speech; forceful presentation of one's points; convincing; eloquent

English Wiktionary, “雄辯” (CC BY-SA 4.0) — https://en.wiktionary.org/wiki/%E9%9B%84%E8%BE%AF · confidence: Medium (Wiktionary, Hokkien)