The Executive Houses were divided into two blocks. The North Executive House, also known as the North Block of the Executive Yuan Building, mainly housed the office of the Premier from 1928 to 1934 until the South Executive House was finished working. The South Executive House, also known as the South Block of the Executive Yuan Building, mainly housed the office from 1934 to 1937 until the Nationalists lost Nanking and fled to Chungking. Premiers including Chiang Kai-shek, Wang Jingwei, Kung Hsiang-hsi and Soong Tse-ven once worked in the premier's office in the South Block.