Basic concepts to be reckoned in a proper history of alchemy.

Use of simple synthetic drug called Chin - Yeh, Gold - plus - plant juice or red colloidal gold. Gold made body everlasting and the herbal principle, as soul, increased life-span. Dialectally it was called Kim - Iya. Arabicized as Al - Kimiya it finally appeared as Alchemy. Chin - Yeh as drug was only brick - red when mercury, and sulphur - with traces of gold were sublimated there resulted Chin - Tan, Gold - plus - cinnabar. It was blood - red and with redness as soul it became the ideal drug of longevity.