The Shāndōng Peninsula also known as the Jiāodōng Peninsula (胶东半岛; 膠東半島) is a peninsula

Peninsula

A peninsula is a piece of land that is bordered by water on three sides but connected to mainland. In many Germanic and Celtic languages and also in Baltic, Slavic and Hungarian, peninsulas are called "half-islands"....

 in the Shāndōng

Shandong

' is a Province located on the eastern coast of the People's Republic of China. Shandong has played a major role in Chinese history from the beginning of Chinese civilization along the lower reaches of the Yellow River and served as a pivotal cultural and religious site for Taoism, Chinese...

 province

Province

A province is a territorial unit, almost always an administrative division, within a country or state.-Etymology:The English word "province" is attested since about 1330 and derives from the 13th-century Old French "province," which itself comes from the Latin word "provincia," which referred to...

 of northeastern China

China

Chinese civilization may refer to:* China for more general discussion of the country.* Chinese culture* Greater China, the transnational community of ethnic Chinese.* History of China* Sinosphere, the area historically affected by Chinese culture...

. It marks the southern limit of the Bóhăi Sea

Bohai Sea

Bohai Sea , also known as Bohai Gulf, Bohai, or Bo Hai, is the innermost gulf of the Yellow Sea on the coast of Northeastern and North China. It is approximately 78,000 km2 Bohai Sea , also known as Bohai Gulf, Bohai, or Bo Hai, is the innermost gulf of the Yellow Sea on the coast of...

.

Cities on the peninsula include Qingdao

Qingdao

' also known in the West by its postal map spelling Tsingtao, is a major city with a population of over 8.715 million in eastern Shandong province, Eastern China. Its built up area, made of 7 urban districts plus Jimo city, is home to about 4,346,000 inhabitants in 2010.It borders Yantai to the...

, Yantai

Yantai

Yantai is a prefecture-level city in northeastern Shandong province, People's Republic of China. Located on the southern coast of the Bohai Sea and the eastern coast of the Laizhou Bay, Yantai borders the cities of Qingdao and Weihai to the southwest and east respectively.The largest fishing...

 and Weihai

Weihai

Weihai is a city in eastern Shandong Province, People's Republic of China. It is the easternmost prefecture-level city of the province and a major seaport. Between 1898 and 1930, the town was a British colony known as Weihaiwei or the Weihai Garrison , and sometimes as Port Edward...

.

The local dialect of Mandarin, Jiao-Liao, is also spoken on the Liáodōng peninsula to the north across the Bóhăi Sea

Bohai Sea

Bohai Sea , also known as Bohai Gulf, Bohai, or Bo Hai, is the innermost gulf of the Yellow Sea on the coast of Northeastern and North China. It is approximately 78,000 km2 Bohai Sea , also known as Bohai Gulf, Bohai, or Bo Hai, is the innermost gulf of the Yellow Sea on the coast of...

.

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

Qingdao

' also known in the West by its postal map spelling Tsingtao, is a major city with a population of over 8.715 million in eastern Shandong province, Eastern China. Its built up area, made of 7 urban districts plus Jimo city, is home to about 4,346,000 inhabitants in 2010.It borders Yantai to the...

 (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

Anglo-Japanese Alliance

The first was signed in London at what is now the Lansdowne Club, on January 30, 1902, by Lord Lansdowne and Hayashi Tadasu . A diplomatic milestone for its ending of Britain's splendid isolation, the alliance was renewed and extended in scope twice, in 1905 and 1911, before its demise in 1921...

 of 1902.

After World War I

World War I

World War I , which was predominantly called the World War or the Great War from its occurrence until 1939, and the First World War or World War I thereafter, was a major war centred in Europe that began on 28 July 1914 and lasted until 11 November 1918...

, it was expected that Shandong would revert to China, but instead was signed over to Japan on 30th April, 1919 after it emerged that the Chinese Premier Duan Qirui

Duan Qirui

Duan Qirui was a Chinese warlord and politician, commander in the Beiyang Army, and the Provisional Chief Executive of Republic of China from November 24, 1924 to April 20, 1926. He was arguably the most powerful man in China from 1916 to 1920.- Early life :Born in Hefei as Duan Qirui , his...

had signed away Shandong to Japan in return for a loan.