National Tower Defense: Upgrade My Buildings in Seconds

At this moment, the world has entered the era of tower defense. Everyone starts with a void territory, but they will be constantly invaded by void monsters. Slimes, goblins, minotaurs, abyss demons and even demon gods, the invading monsters are constantly getting stronger. In order to resist the increasingly powerful monsters, everyone can only continue to climb the technology tree. From the Stone Age, to the Iron Age, the Classical Age, and even to the legendary Age of Magic, Age of Martial Arts, Space Age and even the Age of Cultivation! And Fang Ming has the talent to upgrade in one second, arrow tower? Upgrade in one second! Training camp? Upgrade in one second! City Lord's Mansion? Upgrade in one second! Farm? Upgrade in one second! All buildings can be upgraded in seconds! Territory construction refers to War and Civilization. This game is similar to Clash of Clans. If you haven't played it before, it will not affect your reading. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.