Modern engineer Li Wei travels to another world with the border city of Kui. The entire city is lacking in resources and people are panicked.
He was unexpectedly promoted as the city lord. With his civil engineering knowledge, he transformed the sewage plant into a water purification fortress, attracting refugees in exchange for labor.
When the bandits attacked, he ordered the citizens to build a defense line with reinforced concrete, and modern ballistae defeated the ancient cavalry.
The princes coveted the "artifact", so he formed an alliance on the surface and secretly traded cans for minerals to develop the steam industry.
Finally, the allied forces of the princes came to the city, and Li Wei stood on the city wall, with the roaring first-generation steam ballistae group behind him.
"Welcome to Kuibian City," he sneered, "please have a taste of industry."
