At first, no one cared about that disaster. It was just a defeat, a massacre, a revolution, a change of era... Until it became closely related to every Chinese.
Japan, Japan, is constantly rising and expanding. They are encroaching on our territory, infiltrating into the spinal cord of the nation, and the spies and traitors they have cultivated are rampant in all directions. In a few decades, Japanese soldiers will be all over China; in a few hundred years, the Chinese nation will cease to exist.
In order to save the critically ill nation, China's far-sighted people devoted all their resources to training thousands of elite non-commissioned officers to explore the most effective tactics to resist the impending Japanese invasion. In addition, all parties have jointly created a corps composed of the most capable soldiers to evaluate and optimize the feasibility of new tactics.
There is no way to verify this huge, arduous and tragic military project. The only clue is the murmur in the dream of a war-mad veteran, who called it the "Plan of the Expulsion Corps".