Tsiang Yien-Si, born in 1915 in Hangzhou, Zhejiang, received his bachelor of science from University of Nanjing in 1936. In 1940 and 1942, Tsiang earned M.A. and Ph.D. degrees from the University of Minnesota and stayed on to carry out corn experiments under Professor H.K.Hayes. Tsiang returned to China in 1947.
After serving on the Chinese American Joint Commission on Rural Reconstruction in Nanking, Tsiang moved to Taiwan in 1948 and continued to serve on the Chinese American Joint Commission on Rural Reconstruction till 1961 when he became the chair of Chinese Society of Agriculture in Taiwan. From 1963 to 1998, Tsiang served on several important political positions including Councilor for the Council of Taiwan, the deputy director of National Science Committee, Secretary-General at Executive Yuan of Taiwan, the Secretary-General at “Office of President”, Minister of “Ministry of Foreign Affairs”, National Policy Consultant for the “Office of President”, and “Presidential Advisor” at “Office of the President”.
Tsiang served as a member of the Standing Committee of the 10th and 11th Central Committee of the Kuomingtang, and he was the only politician in Taiwan who had served all of the following three critical political positions: Secretary-General for Executive Yuan, Secretary-General for “Office of the President”, and Secretary-General for Central Committee of the Kuomingtang.