Disabuse the "Yebushou",a Kind of Spy in Ming Dynasty

In modern or ancient times,in China or elsewhere the military information played a very important role in the war.So,all the dynasties in Chinese history took more attention to the intelligence and the spy.In Ming Dynasty,The spy had further progress.As the spy of the Ming Dynasty,the Yebushou had been applied to military field.As to Yebushou,the academic circle has not paid more attention to it.And has some problems about its conception,It always be defined simply as the spy.This article will disabuse Yebushou from time space and function,taking The Ming Dynasty as the breakthrough point