"Invisible Guardian" was actually an interactive live-action video game that Li Youzhi had played before.
The game was shot entirely with real-life actors and sets, and featured full voice acting throughout. Rather than calling it a game, it was more like an interactive movie where players could control the protagonist's choices to unlock different storylines and endings—a multi-ending interactive film composed of PowerPoint-style still photographs.
The story of "The Guardian" was adapted from the experiences of our Party's legendary underground operative, Yuan Shu. It followed a patriotic student named Xiao Tu who, during the turbulent years of war, was arrested for taking to the streets to call for resistance against the Japanese invasion. After his release, his teacher—who was secretly an underground Party member—arranged for him to study abroad in Japan. He returned to China after his image as a patriotic student had faded from people's memories, and under the organization's orders, he infiltrated enemy ranks, maneuvering through the treacherous and unpredictable battlefield of espionage.
Chapter 171