In the twenty-sixth year of the Republic of China, on the eve of the fall of Shanghai, I (Shen Yanzhi) returned to China with the military theories and "strategic deduction system" I learned while studying abroad. I wanted to use my identity as the vice-president of the Chamber of Commerce to secretly reserve supplies for the anti-Japanese war, but during my first deployment, I bumped into Su Qingyuan, the seemingly fragile young lady from Suzhou, who actually snatched a batch of urgently needed rifles from me at the arms trading ground.
The system prompted "Su Qingyuan can become a key ally, and forced competition will lead to the loss of supplies." I suppressed my hostility and voluntarily gave up 30% of the arms. Unexpectedly, this move made her see through my desire to save the country under my "businessman" mask. After that, we went from "testing each other" to "fighting side by side": I used the system to deduce the battle situation, helped her avoid the Japanese army's manhunt, and escorted the underground party to deliver intelligence; she used her business contacts to open up material transportation lines for me and decipher the Japanese army's encrypted telegrams.
