Restart 1990, Starting from the Age of 12

Lu Ran's last consciousness was the desperate cry from the heart monitor, and the gray, unreal sky outside the window. More than forty years of life passed quickly before my eyes like a revolving lantern - the guilt of not letting my parents enjoy their old age, the regret of dropping out of school due to poverty, and the unwillingness of my own mediocrity, all finally solidified into the mouthful of blood stained with gray-black dust that my father coughed out...