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National Emblem of Taiwan

Blue Sky with a White Sun Flag
Naval Jack of the Republic of China.svg
Name "Blue Sky with a White Sun" flag (青天白日旗)
Kuomintang (KMT) party flag and the ROC naval jack.
Proportion 2:3
Adopted 1893
Design A white Sun with twelve rays on blue background.
National Emblem of the Republic of China
Republic of China National Emblem.svg
Details
Armiger Republic of China
Adopted December 17, 1928
Escutcheon Blue Sky with a White Sun
Party Emblem of the Kuomintang
Emblem of the Kuomintang.svg
Details
Armiger Kuomintang
Escutcheon Blue Sky with a White Sun, with rays reach the edge of the dish

The Blue Sky with a White Sun (Chinese: 青天白日旗; pinyin: Qīng tīan bái rì qí) serves as the design for the party flag and emblem of the Kuomintang (KMT), the canton of the flag of the Republic of China, the national emblem of the Republic of China and as the naval jack of the ROC Navy.

In the "Blue Sky with a White Sun" symbol, the twelve rays of the white Sun representing the twelve months and the twelve traditional Chinese hours (時辰 shíchen), each of which corresponds to two modern hours and symbolizes the spirit of progress.

The "Blue Sky with a White Sun" flag was originally designed by Lu Haodong, a martyr of the Republican revolution. He presented his design to represent the revolutionary army at the inauguration of the Society for Regenerating China, an anti-Qing society in Hong Kong, on February 21, 1895.

During the Wuchang Uprising in 1911 that heralded the Republic of China, the various revolutionary armies had different flags. Lu Hao-tung's "Blue Sky with a White Sun" flag was used in the provinces of Guangdong, Guangxi, Yunnan, and Guizhou, while the "18-Star Flag", "Five-Colored Flag", and other designs were used elsewhere.

When the government of the Republic of China was established on January 1, 1912, The "Five-Colored" flag was adopted as the national flag, but Sun Yat-sen did not consider its design appropriate, reasoning that horizontal order implied a hierarchy or class like that which existed during dynastic times. Thus, when he established a rival government in Guangzhou in 1917, he brought over the "Blue Sky with a White Sun" flag for the party and the "Blue Sky, White Sun, and a Wholly Red Earth" (青天白日滿地紅) flag, which was then the naval ensign, for the nation. This officially became the national flag in 1928 while the "Blue Sky with a White Sun" flag was adopted as the naval jack.


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Wikipedia

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