The story
Partial calque from Mandarin 珍寶島/珍宝岛 (Zhēnbǎo Dǎo, literally “treasure (Zhenbao) island”)
Etymology from Wiktionary, CC BY-SA 4.0.
Today it means: An island of Zhenbaodao, Hulin, Jixi, Heilongjiang, China. Full definition →
Partial calque from Mandarin 珍寶島/珍宝岛 (Zhēnbǎo Dǎo, literally “treasure (Zhenbao) island”)
Etymology from Wiktionary, CC BY-SA 4.0.