The story
Partial calque of Mandarin 釣魚臺群島 /釣魚台群島 /钓鱼台群岛 (Diàoyútái Qúndǎo).
Etymology from Wiktionary, CC BY-SA 4.0.
Diaoyutai Islands
Today it means: Synonym of Senkaku Islands: the Mandarin Chinese-derived name (Taiwan and Hong Kong). Full definition →