Jyuguang

[…]Jyuguang, once known as Dongcyuan or Eastern Dog, and Sicyuan or Western Dog, the name derived from the island's supposed resemblance to a crouching dog in outlet of Min River, and named Jyuguang after Remembering the Spirit of Jyu[…]

2004, 馬祖国家風景区, →ISBN, →OCLC, page 30

The president said that from 7 a.m. to 3 p.m. he had travelled to the Matsu County to visit seven of its islands, including Nangang, Beigan, Dongyin, Liangdao, Gaodeng, and the Jyuguang island^([sic]).

Office of the President, Republic of China (Taiwan)

[2005 September 9, “President Chen Receives the Delegation from the Chinese-American Elected Officials”, in 中華民國總統府 [Office of the President, Republic of China (Taiwan)], archived from the original on 06 Mar 2023

Jyuguang used to be named "Baicyuan" (White Dog Village) because two islands of it look like dogs lying in the sea. Considering the inadequate of the name, the name of the village was renamed Jyuguang in 1971. The name was given by late President Chiang Kai-shek following the old saying "Wu Wang Tsai Jyu" which means that "Don't forget the Jyu Country".

莒光鄉原名白犬鄉，因某個角度視之，整個島嶼狀似「犬」而得名。 […] 由于名字不雅,民国六十年(1971)十月,经行政院核定名為更莒光鄉， […] 係先總統蔣公命名，寓意「毋忘在莒」。

2007, 文化資產宣導推廣活動示範行, →ISBN, →OCLC, page 61

The offshore islands of Matsu belong to Lienchiang county and cover a total area of 25,052 ha. They are composed of five large and several smaller islands, which are administratively divided into the four villages of Nangan, Beigan, Jyuguang and Dongyin. According to the national census of 1997 5,360 people live on the Matsu islands with more than 60% of the population living in Nangan.

2013, Meng-Kan Chen, Hsiu-Hsi Chen, “Increased cancer mortality in Taiwanese inter-island migrants”, in Geospatial Health, volume 7, number 2, →DOI, →ISSN, →OCLC, archived from the original on 08 Aug 2017, page 252, column 2

The islands of Jyuguang Township (莒光鄉; Jǔguāng xiāng), Dongju (東莒; Dōngjǔ; Tongchu) and Xiju (西莒; Xījǔ; Hsichu), are the most southerly of Matsu’s islands. Both are remote and sparsely inhabited, but there's some pretty scenery.

2017 May, Piera Chen, Dinah Gardner, “Taiwan's Islands”, in Lonely Planet Taiwan (Lonely Planet), 10th edition (Travel), Lonely Planet Publications Pty Ltd, →ISBN, →OCLC, page 299