Who is the author of Fifteen Years of Perpetual Calendar?

Son of Huang (19 18—2000), born in Changsha, Hunan, is a famous historian of American nationality.

Huang Renyu was born in Changsha, Hunan in 19 18. He studied at Nankai University in Tianjin (1936 ~ 1938) and served as a junior officer of the National Army for ten years during and after the Anti-Japanese War. After graduating from Chengdu Central Military Academy (1940), he served as platoon leader and acting company commander of the 14 Division of the Army. 1943, he joined the Indian army and served as the staff officer of the new army captain. 1in may, 944, he was injured in Myitkyina, Myanmar, and was awarded the first-class merit of the armed forces. After War of Resistance against Japanese Aggression, he served as the main staff of the third party and the northeast security commander. 1946 After taking the national examination, he was admitted to the United States Army Staff University. After graduation (1947), he served as a staff officer of the Ministry of National Defense. 1950, he retired as a major member of the Japanese delegation in China. He went to America again and studied history at the University of Michigan. He received a bachelor's degree (1954), a master's degree (1957) and a doctor's degree (1964). He taught at Southern Illinois University, and from 1968 to 1980, he was a professor at the State University of new york at New Paltz, and served as a visiting associate professor at Columbia University and a researcher at the Institute of East Asian Studies at Harvard University. On June 8, 2000, he died in a hospital in upstate New York at the age of 82.