Sun Yat-sen introduced the style shortly after the founding of the Republic of China (1912–1949) as a form of national dress with distinct political overtones.
The four pockets are said to represent the Four Virtues of propriety, justice, honesty, and shame; and the five buttons the branches of China's former government (Executive, Legislative, Judicial, Examination, Control).
[6] Although it declined in use among the general public in the 1980s and 1990s due to the increasing prominence of the business suit, it is still commonly worn by Chinese leaders during important state ceremonies and functions.
General Secretary Hu Jintao still wore the Mao suit on special occasions, such as the ceremony marking the 60th anniversary of the People's Republic in 2009.
[13][14][15] In this situation, the Mao suit serves as a form of evening dress, equivalent to a military uniform for a monarch, or a tuxedo for a paramount leader.