National Destiny Survival: I Have a God-Level Construction System

All races are coming, and the fate of the country is duel! The nine lords of the Dragon Kingdom have fallen one after another, and the country's destiny is in danger and the country is on the verge of destruction. Young Lin Ye was accidentally selected and awakened the most useless F-level talent. When the whole country was in despair, The god-level construction system is suddenly activated! While others built thatched huts, he built a steel fortress overnight; While others were struggling to survive, he summoned an army of mechas to sweep across all races! A hundredfold increase, ten thousand towers suppress the boundary, shadows follow, and the legion crushes! From surviving in desperate situations to building the Dragon Kingdom's supreme defense; From being a lone warrior, to overwhelming all races, reaching the top of the world!