“九一八事变”的炮声,不仅震撼了中华民族,也使国际社会大为震惊。共产国际敏锐地意识到:日本帝国主义将会把侵略矛头指向苏联。为建立一道对抗东方法西斯侵略的屏障,共产国际在苏联组织了国际地下情报网。一批中国抗日战士为了保卫祖国,反抗日本法西斯的侵略,在东北上空发出? The gunfire of the “September 18 Incident” not only shocked the Chinese nation but also greatly alarmed the international community. The Comintern is keenly aware that Japanese imperialism will point its aggression at the Soviet Union. In order to establish a barrier against the fascism in the east, the Comintern organized the International Underground Intelligence Network in the Soviet Union. A batch of Chinese anti-Japanese fighters, in order to defend the motherland and against the aggression of Japan’s fascists, were issued over the northeast.