Some comments pathetically lack the historical knowledge.
Add that to the fact that Chiang was trained in Japan and he had formal ties and equipment and technology and engineers going back and forth between them for a brief time, and it seems like Chiang Kai Shek’s govt was much more formally active with the Axis powers than Korea was. At least Korea lacked the formal status to be courted by Nazi Germany. Chiang had the status as the “ruler” of China. Before Japan took over the good parts of it.
Ironically, The commenter is an (Korean) American.