Spy + time travel + space + system + multiple female protagonists
Traveling through 1938, Shen Qianfeng became a "Southern Businessman" in the Japanese-occupied area.
Everyone thought he was only interested in profit, but he was always secretly making the Japanese army's plans secretly fail.
Around him are calm and wise underground party members and sassy and decisive military agents.
They all doubted him, but had to rely on his unpredictable methods.
A bullet can turn the tide of a war; a dose of penicillin can save a life.
And the [Beacon Space] he carries with him is the only trump card in this dark war.
