In Order to Keep Her Voice, I Supported Da Qin

I was lonely and helpless, my parents died, and I was dependent on my sister. Later, my sister also left, leaving only a mobile phone with her voice on it. I died suddenly and accidentally traveled through time while staying up late to sort out information. There was no golden finger, no network, and only a mobile phone with an offline bean bag, which saved her only lingering voice. In order to prevent this voice from disappearing completely, I can only survive as hard as I can. No electricity? Rub the generator with your bare hands. No food? Improve farming and build water conservancy. Lack of medicine? Biochemical purification, prevention and treatment of epidemics. Lack of stability? Improve people's livelihood with engineering knowledge, and define the world with historical perspective. Everyone in the world praises me as a genius for saving the Qin Dynasty from collapse and saving all the people from fire and water. But no one knows that I support the whole world just by doing it casually. What I seek is never political power or leaving a name in history. But in this different world a thousand years ago, I could whisper one sentence every day: "Sister." Then I heard that gentle response: "I'm here."