Forging Swords into Plowshares: I Built a City-State in Ancient Times

Protagonist: Lin He (28 years old), a modern civil engineer with a pragmatic and rational personality System: Ten Thousand Realms Infrastructure System (tech tree mode, unlocked through achievements) Traveling location: The last years of the Yan Dynasty (an imaginary ancient time when the princes were divided) Core contradiction: the collision between modern thinking and ancient society, the balance between survival in troubled times and ideal construction