A top student at the National Defense University, he was hit while trying to save someone, but when he opened his eyes, he became an overseas student in 1937. Being in an occupied area, facing the ruthless Japanese invaders, defenseless? No, what he has in mind is the military technology and tactics of the next few decades. From forming a guerrilla force, to designing home-made weapons, to predicting every move of the enemy, he led his brothers to fight their way out of the dead. While others are waiting for reinforcements, he is waiting for an opportunity; while others are fleeing for their lives, he is making arrangements.