featuring a Taijitu symbol, while Sun Yat-sen preferred the Blue Sky and White Sun flag to honor Lu Haodong. Despite the uprisings targeting a Manchu-dominated regime, Sun Yat-sen, Song Jiaoren and Huang Xing unanimously advocated racial integration, which was symbolized by the five-color flag. They promoted a view of the non-Han ethnicities as also being Chinese, despite them being a relatively small percentage of the population. The "five ethnic groups under one union" flag was no longer used after the Northern Expedition ended in 1928. A variation of this flag was adopted by Yuan Shikai's empire and the Japanese puppet state of Manchukuo (see Flag of Manchukuo). In Manchukuo, a similar slogan (五族協和) was used, but the five races it represented were the Yamato (red), Han Chinese (blue), Mongols (white), Koreans (black) and Manchus (yellow). Some of its own variations also made the yellow more prominent, rather than display each color equally. During the Second Sino-Japanese War, the flag was used by several Japanese puppet governments, including the Provisional Government of the Republic of China in the northern part of the country and the Reformed Government of the Republic of China in central China. Gallery China Inner Manchuria Inner Mongolia ("four races") See also Buddhist flag Five Races Under One Union (Manchukuo) Zhonghua minzu Notes References Chinese nationalism Flags of China Politics of the Republic of China (1912–1949) Ideology of the Kuomintang 1911 Revolution Flags displaying animals Rainbow flags