Lin Mo, a social worker in the 21st century, was working overtime at night and complained that "Qin Shihuang would have unified the world long ago if I had my efficiency." He clutched his mobile phone and world map poster when he was struck by lightning. I opened my eyes and woke up, lying in the side hall of the Xianyang Palace of the Qin Dynasty. My iPhone 15, which was struck by lightning and sparks, fell out of my arms (it miraculously turned on but only had 10% battery left). In front of me stood a middle-aged man in black robes - Qin Shihuang, who was holding a bronze sword against his throat.