The Fourth Disaster: I Rely on Players to Build an Empire on Which the Sun Never Sets

[Alternate History + Fourth Natural Disaster + Infrastructure Farming + Players + System] In the late Xia Dynasty, there were constant natural disasters, internal fighting in the court, rampant aristocratic families, refugees, and attacks by Tatar and Japanese pirates in turns. Qin Tian traveled through time and became a county magistrate. A wealthy family shaved his hair and changed his clothes, forcing him to open the door and offer sacrifices to the city. His immediate boss even came with an army of Tatars to force him to surrender? Fortunately, at this time, he obtained the player summoning system, which can summon players to fight from real time and space. From then on, he led the players to farm, develop science and technology, drive out the Tartars, eliminate the traitors, destroy the Japanese pirates, conquer all directions, wipe out the barbarians, and create a prosperous China!