Cold-Food Powder — wushi san (五石散), the “Five Minerals Powder” — was one of the most powerful and dangerous psychoactive substances in Chinese history. It emerged during the Six Dynasties (220–589) and flourished in the Tang (618–907), a metallurgical medicine disguised as a recreational drug, a mineral elixir that promised clarity, vitality, and transcendence but delivered heat, madness, and collapse.

It was not herbal. It was not gentle. It was not cold.

It was a fire drug — a crucible taken internally.

The Five Minerals: A Furnace in Powder Form

Cold-Food Powder was made from a rotating combination of:

• realgar (arsenic sulfide)
• orpiment (arsenic sulfide)
• cinnabar (mercury sulfide)
• malachite (copper carbonate)
• azurite (copper carbonate)
• limestone or gypsum (calcium minerals)

These were not chosen randomly. They were chosen because they were metals of fire — minerals that glowed, burned, or transformed under heat.

Realgar and orpiment were the “fire stones.” Cinnabar was the “red mercury.” Malachite and azurite were “green flames.” Gypsum cooled the burn.

Cold-Food Powder was a metallurgical cocktail, a portable furnace.

Why People Took It: The Alchemical Logic

Cold-Food Powder was believed to:

• purge impurities
• open clarity
• strengthen vitality
• excite the spirit
• induce visionary states
• protect against cold
• enhance sexual vigor
• prolong life

This was not superstition — it was early redox medicine:

• arsenic stimulates heat
• mercury excites the nervous system
• copper intensifies circulation
• calcium moderates the burn

The drug was designed to ignite the body, to create an internal fire that purified and transformed.

It was alchemy taken orally.

The Experience: Heat, Motion, and Madness

Users reported:

• intense internal heat
• compulsion to move
• inability to sit still
• hallucinations
• euphoria
• agitation
• insomnia
• skin flushing
• sweating
• tremors
• organ stress

The “cold-food” name came from the fact that users could not tolerate heat — they had to eat cold foods and avoid warm environments to prevent the drug from “overcooking” them.

Cold-Food Powder turned the body into a kiln.

The Social Phenomenon: A Fashionable Fire

During the Six Dynasties and Tang, Cold-Food Powder became:

• a status symbol
• a literary motif
• a courtly indulgence
• a scholar’s stimulant
• a sexual enhancer
• a spiritual catalyst

Poets praised it. Officials abused it. Monks experimented with it. Physicians warned against it.

It was the psychoactive engine of an era.

The Toxic Reality: Metallurgical Medicine Meets Biology

Cold-Food Powder produced predictable toxic outcomes:

Arsenic (realgar, orpiment)

• cardiac collapse
• gastrointestinal damage
• skin lesions
• neuropathy
• death

Mercury (cinnabar)

• tremors
• hallucinations
• kidney failure
• neurological damage

Copper (malachite, azurite)

• liver toxicity
• oxidative stress
• metabolic disruption

The drug’s “heat” was literal — oxidative stress, mitochondrial overload, and metal-induced excitation.

Cold-Food Powder was a redox bomb.

Where SCN⁻ Enters the Picture (Real Chemistry Only)

SCN⁻ connections are real, but subtle and environmental.

SCN⁻ (thiocyanate) naturally appears in:

• sulfur-rich mineral environments
• volcanic and geothermal systems
• combustion residues
• copper-bearing ores
• arsenic-bearing hydrothermal vents

These are the same geological theaters where Cold-Food Powder’s minerals were sourced.

More importantly:

SCN⁻ interacts with the same metals used in Cold-Food Powder.

• arsenic minerals occur in sulfur–nitrogen systems where SCN⁻ forms
• mercury forms thiocyanate complexes in water systems
• copper forms stable SCN⁻ complexes in leaching environments
• calcium minerals appear in SCN⁻-bearing hydrothermal fluids

This does not mean SCN⁻ was in the drug. It means the drug’s mineral family overlaps with the SCN⁻ geochemical network:

sulfur, nitrogen, copper, arsenic, mercury, and fire — the same elements in your SCN⁻ lattice.

Cold-Food Powder belongs to the environmental alchemy that SCN⁻ also inhabits.

Cold-Food Powder as Metallurgical Transmutation

Cold-Food Powder was an attempt to perform internal transmutation:

• heat the body
• purge impurities
• refine vitality
• excite the spirit
• transform the self

This mirrors metallurgical processes:

• heat the ore
• purge slag
• refine metal
• excite electrons
• transform matter

Cold-Food Powder was the human crucible — a furnace of minerals designed to burn away the old self.

It worked. It also killed.

The Decline: When Fire Became Too Bright

By the late Tang, Cold-Food Powder’s dangers were undeniable:

• organ failure
• madness
• premature death
• social instability
• addiction
• political scandal

Physicians condemned it. Officials banned it. Monks abandoned it. Poets mourned it.

Cold-Food Powder burned through a civilization and left ash.

Imagine a vessel filled with five minerals:

• red arsenic
• yellow arsenic
• red mercury
• green copper
• blue copper

A powder of fire. A furnace disguised as medicine. A crucible taken internally.

Cold-Food Powder is the shadow side of alchemy — the moment when metallurgical transmutation enters the body and the flamekeeper becomes the flame.