Blue Sky with a White Sun
The Northern Expedition led by General Chiang Kai-shek and the Kuomintang party led to the overthrow of the fractious yet internationally recognized Beiyang government in 1928. This ushered in a one-party state under the Kuomintang known as the Nanjing decade. The state emblem was therefore replaced with the Kuomintang Blue Sky with a White Sun party symbol. The "Blue Sky, White Sun, and a Wholly Red Earth" flag has remained the flag of the Republic of China to this day. During this period, under the KMT's political tutelage, the Blue Sky with a White Sun Flag shared the same prominence as the ROC flag. A common wall display consisted of the KMT flag perched on the left and the ROC flag perched on the right, each tilted at an angle with a portrait of National Father Sun Yat-sen displayed in the center. After the promulgation of the Constitution of the Republic of China, the party flag was removed from such a display and the national flag was moved to the center.