Lord of National Destiny: Using Technology to Torture Fantasy Lords

[Lords, tower defense, collision of science fiction and fantasy, mid- to late-stage interstellar mechas, battleships] Arrow Tower→Gun Tower Blacksmith Shop→Heavy Industry Factory Mine→Material Manufacturing Factory Water Well→Water Plant Armor→Armor, Powered Armor, Battle Armor, Mecha [Melee Weapons] → [Alloy Weapons, Ion Binders] [Remote weapons] → [Compound bow, Gauss gun, ion ray gun, laser gun] Infantry Training Camp→Mecha Academy (Mecha Division) Archer Training Camp→Military Martial Arts Academy (Gunner Division) Cavalry Training Camp→Instrument Academy (Instrument Master) Mage Training Camp→War Academy (Commander) [Warlock Training Camp]→[Battlefield Medical College (Logistics Supply Medical Corps)] Three months ago, Blue Star suddenly dropped the National Fortune Lord game and selected thousands of people to participate in the game. If the lord is prosperous, the country will be prosperous; if the lord is dead, the country will suffer. Just when everyone thought this was a good opportunity for Blue Star to reshuffle, reality slapped them hard. In just three months, 42 countries were wiped out, and the global death toll reached 3.2 Billion. Due to the late arrival of the system, it took three months for the time traveler Luo Bing to enter the Guoyuan Lord game. Relying on the system's ability, Luo Bing converted a large number of technological items, which dumbfounded everyone in Blue Star. "Our lord is playing a fantasy game, so why is he playing science fiction?" When the alien lords encountered Luo Bing's territory, they were all shocked. "How come he has so many high-quality and high-level buildings? How can he still attack my territory from such a distance?"