After the Xuanwumen Incident, Li Shimin ascended the throne and became emperor. He faced a mess of internal and external troubles and a lot of waste to be revitalized. Just when he was thinking about it, he was bound to the [Civilization Promotion System], which could summon a group of visitors from other worlds who called themselves "players".
These "players" are immortal, think outside the box, and regard this place as a real game. They called him the "Eternal Emperor NPC", built a fortress with "local cement" in three days, used the "queue to shoot" tactic to sweep away the Turkic cavalry, and even wanted to stuff "scientific pig farming" and "constitutional monarchy" into the Tang Dynasty's court.
Li Shimin held the emperor's will with one hand and controlled these lawless "fourth natural disasters" with the other, setting off an unprecedented change inside and outside the court. When the steam engine roared in Chang'an, and when the Tang fleet sailed towards the stars, an ultimate question emerged: Is he using the "players" to create a prosperous world, or has he and everything with him become a "game" in the eyes of a higher being?
See how Li Shimin leads his "legion of players", using the entire era as a chessboard, playing games with the sky, and starting a civilization craze that sweeps the heavens!