Wait for Me, Come Back from 0 and 1

On the forty-third day after the death of her husband Qin Yue, Gong Qinghe discovered something wrong. There is an extra glass of water on the bedside table. Warm. Just the right temperature at the entrance. That's the water Qin Yue pours for her every morning - boiling water and letting it sit for fifteen minutes, or twelve minutes in winter, with an error of no more than two degrees. The door lock is intact. The windows are closed. She is the only one at home. And an AI robot that never breaks. It never charges, but never dies; its tone of voice becomes more and more like him; when she has nightmares late at night, it will automatically play "Dock of the Bay" - Qin Yue's favorite song. She started documenting every detail that went wrong. I remember it for twelve years. Then she discovered a secret hidden under the AI ​​base - a dark red stone, a copper compass engraved with the heavenly stems and the earthly branches, and a promise that would take sixty years to be fulfilled. He said: I was only six months old. Sixty years, I made a profit. She said: Then I will wait for you. Sixty years is sixty years.