Location of the Shandong Peninsula.
The Shandong Peninsula (simplified Chinese: 山东半岛; traditional Chinese: 山東半島; Mandarin Pinyin: Shāndōng Bàndǎo; Jyutping: saan1dung1 bun3dou2) also known as the Jiaodong Peninsula (simplified Chinese: 胶东半岛; traditional Chinese: 膠東半島; pinyin: Jiāodōng Bàndǎo) is a peninsula in Shandong province, marking the southern limit of the Bohai Sea. Cities on the peninsula include Qingdao, Yantai and Weihai.
It was formerly an island, but long ago was joined by the mainland by the Huang Ho delta extending.
The local dialect of Mandarin, Jiao-Liao, is also spoken on the Liaodong Peninsula to the north across the Bohai Sea.
The Shandong peninsula formed part of the German concessions in China from 1898 to 1914. During World War I, Japan captured the city of Qingdao (previously held by Germany) on the peninsula in November 1914; Japan had declared war on Germany (August 1914) in terms of the Anglo-Japanese Alliance of 1902.
After World War I, it was expected that Shandong would revert to China, but instead was signed over to Japan on 30 April 1919 after it emerged that the Chinese Premier Duan Qirui had signed away Shandong to Japan in return for a loan.
Coordinates: 37°N 121°E / 37°N 121°E