Sky Screen: I Was a Mad Emperor, Yet Became the Greatest Emperor of All Time

A sky screen appears out of nowhere, and the historian blogger “Lao Xiao Digs Up History” from the future livestreams an exposé: How did the seventh prince, forgotten by his father, bullied by his elder brothers, and facing a 99.99% chance of starving to death from the start, use nothing but a charcoal pencil, a two-degree slant, and night shifts of a hundred ghosts to temper absolute imperial power with room for human fallibility, establish the “Slanting Light Reign,” and ultimately become the emperor who had no posthumous title, temple, or mausoleum, yet was hailed as the greatest emperor of all time?