水銀

始皇初即位，穿治酈山，及并天下，天下徒送詣七十餘萬人，穿三泉，下銅而致槨，宮觀百官奇器珍怪徙臧滿之。令匠作機弩矢，有所穿近者輒射之。以水銀為百川江河大海，機相灌輸，上具天文，下具地理。以人魚膏為燭，度不滅者久之。

When the First Emperor ascended the throne, the digging and preparation at Mount Li began. After he unified his empire, he sent 700,000 people to work. They dug down deep to underground springs, pouring copper to place the outer casing of the coffin. Palaces and viewing towers housing a hundred officials were built and filled with treasures and rare artefacts. Workmen were instructed to make automatic crossbows primed to shoot at intruders. Mercury was used to create a hundred rivers and the ocean, and set to flow mechanically. Above, the heaven is depicted, below, the geographical features of the land. Candles were made of "mermaid"'s fat whose light would not extinguish for a long time.