As the war intensified, young and able-bodied Japanese men from the “pioneering groups” were continuously drafted into military service. By August 1945, the Japanese Kwantung Army, realizing that defeat was inevitable, chose to conceal the situation and secretly retreated, abandoning the remaining elderly, weak, sick, and women and children of the “pioneering groups” at the front lines of the war. Members of the “pioneering groups” fled in panic, and some chose to commit suicide, while many children were left behind in China, becoming orphans and being raised by kind-hearted Chinese people.