Kyushu: Build Walls High, Accumulate Grain Widely, and Slowly Become King

Da Qin+Technology+Parallel World+Single Female Protagonist+System+Alternate History+Invincible Cool Writing! Parallel World Daqin... 207 BC.. This is Xinyang's 6th year in this time and space... Activate the technology system at the start... It took less than a year to build Changgeng City! As a result, after the population of Changgeng City exceeded 10,000, the system disappeared! Helpless, he could only stabilize the city based on some knowledge from his previous life... Five years later... System: "Ding! Five years have come and the technology system has been reactivated!" —————— Xinyang: "Do you know how I came here in the past five years?!" —————————————————————— Let's see how Xinyang developed from a city-state force into a unified force during this chaotic period... The introduction is short and weak, please read the text! Warm reminder, newcomers + newbies!