[Historical Time Travel + Systemless + Infrastructure Management + Technology Flow + Group Imagery]
When Lu Jingheng, a master of geographical information science, opened his eyes, he became Lu Heng, a minor official in the Qingxi County government office of the Daning Dynasty, waiting to be questioned.
The original well map was wrong, and thirty-six civilians dug for two days in vain. There was not much food left, and the wealthy family took advantage of the severe drought to control the water source. The county magistrate only gave him seven days: if he can find water, he will live; if he cannot find it, his old and new crimes will be settled together.
There is no system, no magical weapons, only knowledge of surveying, topography, water systems and disaster assessment, and a pair of feet that must personally measure mountains and rivers.
Starting from an old river that had been wiped off the map, Lu Heng searched for water, controlled floods, built roads, transported grain, and cleared acres of land, and step by step he uncovered the benefits hidden in deeds, grain books, and maps.
But he soon discovered that maps could save people, reveal food routes, attract enemy troops, and even become a tool for powerful officials to fight for the world.
When famines, border troubles and struggles for imperial power come one after another, what he has to do is not only to draw the world accurately, but also to make every line reviewable, so that those who master the whole map cannot take the mountains and rivers as their own.
