Prof.Khi-Rui Tsai was bom in Tongan (Xiamen,Fujian),in the December of 1913.After graduted from Xiamen University in 1937,he was appointed as an assistant professor of Xiamen University.He was selected as a government-supported oversea student to continue his education in the US in 1947,and obtained his PhD degree in 1950 from the Ohio State University.After the establishment of the People's Republic of China,he overcame difficulties and returned to Xiamen University in 1956.