Lin Che, a 26-year-old history graduate who had just been "optimized" by the company in 2023, was squeezed into the morning rush hour subway to watch a mixed video of "Bright Sword" to relieve boredom. The next second, the harsh brakes of the subway, Li Yunlong's rough face on the mobile phone screen, and... The image of a cannonball roaring with tail flames exploded in his mind! The severe dizziness made his eyes darken and his stomach was churning. Time travel to Chu Yunfei, commander of the 358th Regiment of the Shanxi-Sui Army in 1939
