This good was the primary source of the “black alteration” of jade artifacts unearthed from high-class tombs. This good, which represented “Real Fire,” was mixed with another good representing “Real Water” and slathered on the feet to allow a person to walk on water, as recounted in Gě Hóng's Bàopǔzǐ in its section on jīndān. Non-black colored ink derived from this good was brushed over oracle bone scripts. As told by (*) Sīmǎ Qiān, an area guarded by automatic crossbows featured imitations of the “hundred rivers” (10[1])made from this (10[1])good. Carved lacquerware gained its distinctive vibrant red from this good’s sulfide. For 10 points, cinnabar was the source (10[1])of what metal which was amalgamated with lead to produce elixirs of immortality consumed by emperors like Qín Shǐ Huáng? ■END■