A Brief History of the Bong-Han Theory and the Primo Vascular System
A short history of the Bong-Han theory is presented. The original work by Bong-Han Kim in the Kyung-Rak Research Institute of North Korea in the early 1960s is described. The follow-up research by Fujiwara in Japan is briefly mentioned. Modern development since the rediscovery of the primo vascular system by the Seoul National University team is given in chronological order.