琼州海峡

Qiongzhou Strait (between Hainan Island and mainland China)

jasper / fine jade / beautiful / exquisite (e.g. wine, food) / abbr. for Hainan province

Qiongzhou, historic name for Hainan Island 海南島|海南岛[Hai3 nan2 Dao3]

prefecture / (old) province / (old) administrative division / state (e.g. of US) / oblast (Russia) / canton (Switzerland)

surname Hai

ocean / sea / CL:個|个[ge4],片[pian4] / great number of people or things / (dialect) numerous

channel / strait

gorge