Long Feiyu is an ordinary office worker. It has been three years since he graduated from college. However, he still has no house or car and works as a cow and horse with a monthly salary of 5,000 yuan and 4,900 yuan. One day, by chance, he obtained a system with legendary abilities and traveled back to 1940 in his sleep. At this time, the land of China was being ravaged by invaders. Long Feiyu relied on the system and mastered the black technology of the 21st century to brutally brutalize the invaders within a given time, fight against hegemonism, and spread Datong throughout the world.
