embarked on the Northern Expedition and left its base in Guangzhou for Wuhan, Nanjing, and Shanghai in three separate divisions. National Government (Wuhan, 1927) During the Northern Expedition, Wang Ching-wei declared Wuhan to be the capital of the Republic of China after the city's capture by National Revolutionary Army forces loyal to the KMT left-wing. Chairmen of the Standing Committee of the National Government: Wang Jingwei (20 March 1927 - 13 September 1927) National Government (Nanjing, 1927–1937; Chongqing, 1937–1945; Nanjing, 1945–1947) Chiang Kai-shek declared the capital of the Republic of China to be in Nanjing after the city's capture by National Revolutionary Army forces loyal to the KMT right-wing during the Northern Expedition. Chairmen of the Standing Committee of the National Government: Chiang Kai-shek (18 April 1927 - 15 August 1927) Tan Yankai (15 August 1927 - 10 October 1928) The leftist government in Wuhan was overwhelmed by local warlords and agreed to join the Nationalist Government in Nanjing in September 1928. Chairmen of the National Government (國民政府主席): Chiang Kai-shek (10 October 1928 - 15 December 1931) Lin Sen (15 December 1931 - 1 August 1943) The National Government relocated to Chongqing from 1937 to 1945 due to the Japanese invasion. Chiang Kai-shek (1 August 1943 - 20 May 1948) Provisional National Government (Beijing, 1937–1940) The Provisional National Government was established as a Japanese collaborationist government established under occupation. Acting Chairman of the Provisional National Government: Wang Kemin (14 December 1937 - 30 March 1940) Reformed National Government (Nanjing, 1938–1940) The Reformed National Government was established as a Japanese collaborationist government established under occupation. Acting Chairman of the Reformed National Government: Liang Hongzhi (28 March 1938 - 30 March 1940) National Government (Nanjing, 1940–1945) A National Government, as a challenge to the legitimacy of Chiang Kai-shek's National Government in Chongqing, was established as a Japanese collaborationist government established under occupation. As evidence of its claims to legitimacy, the government in Nanjing established the same set of institutions as the one in Chongqing and flew an almost-identical flag. This replaced the Provisional and Reformed National Governments. Chairmen of the National Government (國民政府主席): Wang Jingwei (30 March 1940 - 10 November 1944) Chen Gongbo (20 Nov 1944 - Aug 1945) (acting) Constitutional Government (Nanjing, 1947–1949; Guangzhou/Chongqing/Chengdu, 1949; Taipei, 1949–present) A new constitution was promulgated on 25 December 1947 and Chiang Kai-shek was subsequently elected President by the National Assembly. President of the