Siheyuan: From the Start, I Took Over Old Jia’s Body and Started Fighting the Japanese

[Satisfying read] + [Poultry-Slaying Reward System] + [Spirit-Spring Space]

Jia Dafu was delivering takeout when he was hit and killed by a high-speed train. He transmigrates into a world set in the era of the Siheyuan, becoming Jia Dongxu's father.

His father is stabbed to death by a Japanese soldier's bayonet from the start, and Jia Dafu unexpectedly awakens a System that rewards him for killing. In a fit of rage, he takes the gun rewarded by the System and shoots the Japanese soldier dead, gaining the ability to speak Japanese. He unexpectedly becomes the leader of the Japanese army's interpreter squad. From then on, he maneuvers among the enemy, looking for chances to root out traitors and wipe out bandits. What Jia Dafu never expected was that the System would also reward him with a 3D biological printer, capable of creating living beings with minds identical to his own. Countless such beings form an army, and from then on he is invincible, winning every battle and earning a lord's title!