Emperor Shun

Qin Shi Huangdi—born Ying Zheng in 259 BCE—unified China through brutal efficiency, then became obsessed with cheating death through chemistry. After conquering six rival kingdoms and declaring himself the first emperor of a unified China, he faced a problem no amount of military conquest could solve: mortality.

The man who standardized currency, writing, and measurements across his empire grew increasingly paranoid about assassination and death. He banned scholars from discussing the past, burned philosophical texts, and buried Confucian scholars alive. But his most dangerous obsession wasn't with controlling the present—it was with extending his future indefinitely. Court alchemists convinced him that cinnabar, a bright red mercury compound, held the secret to eternal life.

For over a decade, Shi Huangdi consumed mercury pills daily, believing each dose brought him closer to immortality. The irony was lost on him: the substance he thought would preserve his life was slowly poisoning his brain. Mercury toxicity explained his increasingly erratic behavior, violent mood swings, and growing paranoia. He built elaborate underground palaces, sent expeditions to find mythical immortality herbs, and trusted no one.

In 210 BCE, during his fourth imperial tour, the emperor died suddenly at age 49—likely from mercury poisoning. His chief minister kept the death secret for months, even placing rotting fish in the imperial carriage to mask the smell of the decomposing emperor. The dynasty Shi Huangdi believed would last ten thousand years collapsed within four years of his death.