Lin Yifei, a college student in the Department of History, traveled back in time to 1937 with a mobile phone loaded with "all the archives of the Anti-Japanese War in later generations" and became a small spy of the military commander. In Shanghai, a city that eats people without spitting out their bones, he relies on "searching information" to reduce dimensionality and attack, wandering among the Japanese puppets, military commanders, and underground parties, just to leave a glimmer of hope for this nation in this hell-like troubled world.
