Duan Wen suffers from mild autism. To him, the world is a precision instrument composed of numbers, formulas and fixed trajectories. He doesn't like accidents, doesn't like noise, and doesn't like talking to strangers. After graduating from college, he rejected all formal invitations from scientific research institutes. Relying on the occasional manuscript fee for interstellar physics journals, he rented this small apartment on the edge of New Shanghai City and lived his life with precision down to the second. Get up at six in the morning, eat a fixed proportion of nutritional paste at 6:15, calculate from 7 to 10, rest for five minutes at 10:05, drink half a cup of warm water, and continue until 2 in the afternoon. Lunch is a heated standardized lunch box, read literature from 2:30 to 6 in the afternoon, calculate for another two hours from 7 to 9 in the evening, wash up and go to bed on time at 9:30, weekends are no exception.