Ping-Pong diplomatic offensive had its roots in Nagoya 04/01/2008 BY TOMOYOSHI ISOGAWA THE ASAHI SHIMBUN For 27 years after the end of World War II, Japan and China remained hostile to each other on the Cold War front. But in 1972, they changed their respective diplomatic policies and normalized their relations. To learn the background to this, I went to Beijing to speak with witnesses to this ..