. The
Arrow Incident of 1856 occurred as a result of Chinese civilian vessels flying foreign flags as the Qing dynasty had no official flag at the time. In 1862, sailors from the
Chinese and
British navies clashed at
Wuhan on the Yangtze River. In response to protests from the
British government that their ships were unable to properly distinguish between Chinese navy ships and civilian vessels,
Yixin (Prince Gong) urged
Zeng Guofan to create a governmental flag for the Qing, and suggested use of a yellow dragon flag, which was also used as one of the
Eight Banners of the Manchu as well as in the
Chinese army. After due consideration, Zeng Guofan concluded that a square flag bore too close a resemblance to the
Plain Yellow Banner of the Eight Banners with the potential to be viewed as an endorsement of the Eight Banners hierarchy, he instead removed one corner to create a triangular flag. The triangular version of the yellow dragon flag was restricted to naval and governmental use only, no civilian ships were permitted to fly the yellow pennant, and it never formally became the national flag. An exception was on 23 February 1873, when the regency of the
Tongzhi Emperor ended and he assumed direct rule of the Qing empire. On that day all ships flew the triangular flag for the first time in celebration. Also on some diplomatic occasions and at international exhibitions, this flag was used to represent China. == Rectangular version (1889–1912) ==