Introduction: A modern youth travels through Xianfeng Village on the outskirts of Xianyang City, and turns out to be Zhao Changqing, the youngest son secretly fostered by Ying Zheng. He is bound to the seven-day sign-in system and unlocks advanced materials such as matchlock guns and high-yielding sweet potatoes. On the day of the crowning ceremony, Ying Zheng took Li Si back to his hometown under the pseudonym of a businessman. Zhao Changqing, who did not know the identity of his biological father, privately persuaded his father to sell his property and run away to avoid disaster. He bluntly said that the First Emperor would die within a year after taking mercury pills. He took out a homemade matchlock gun to protect himself in troubled times. Li Si was so frightened that he knelt down and covered his ears when he heard the treacherous words.
