The story
From the Postal Romanization of the Mandarin Chinese pronunciation for 青島／青岛 (Qīngdǎo).
Etymology from Wiktionary, CC BY-SA 4.0.
From the Postal Romanization of the Mandarin Chinese pronunciation for 青島／青岛 (Qīngdǎo).
Etymology from Wiktionary, CC BY-SA 4.0.