The Ghost Knight Monarch's Underground City Project

Xia Mo’an, a hardcore aficionado of base-building and resource management games, is unexpectedly summoned by Talia Ronove, a half-blood demon driven to a dead end. Transmigrating into another world, he accidentally possesses an ancient set of cursed armor. Starting from absolute scratch in the harsh, unforgiving Underground Demon Realm, he sets out to construct the ultimate Demon Lord’s City! What? Building a dungeon is too difficult? Fear not, for he has the [Alien Underground Colony Construction System]! The most advanced technology is indistinguishable from magic, and the most rational science will eventually assimilate magic into its own system! Elven Lords, Dwarven Sovereigns… the stage for demi-humans is gradually drawing to a close. The War of the Four Nations, the Clash of Kings… the Era of Humanity has only just begun! In a world abandoned by the Gods, who will inherit their divine legacy? The knightly journey of an otherworldly phantom, and a magnificent fantasy adventure, unfolds right here! — Description from novelcodex.orgFull novel: The Ghost Knight Monarch's Underground City Project — read the rest free on N​o⁠v​e⁠l​C⁠o​d⁠e​x⁠.​o⁠r​g⁠