I'm Writing History, and I Sent Away the Time Traveler Ying Zheng at the Beginning

I, Shen Heng, a college entrance examination student turned into a historical maintenance worker. At the beginning, I was asked to send away the time traveler Ying Zheng... Shen Heng woke up among the dead in the Battle of Changping and was bound to the [Historical Continuity Maintenance System]. His mission: to erase all the anomalies that make history go astray. Therefore, he advised Ying Zheng, who was addicted to industrialization, to take his time, woke up Wang Mang, who wanted to establish a constitutional monarchy, and used humanistic persuasion to Huang Chao, who had an imperial system... He sent away every shining thought and advanced soul to maintain the so-called official history.