Later, the human body was shaped into a melting pot to practice essence, which was called internal alchemy. External alchemy refers to Taoism burning alchemy drugs through various secret recipes to take or directly take some Ganoderma lucidum medicinal materials to regulate yin and transform them into yang.
External alchemy is to adjust the tone by burning Dan medicine or directly taking some Ganoderma lucidum medicinal materials and transform it into yang. In addition, Taoism's external alchemy can also be called clearing qi and enlightening. External alchemy can also refer to alchemy or Taoist magic.
Dan, this is from Dante. The so-called Dan is just a kind of Chinese medicine, and Dan's name can still be heard until modern times. The earliest record is Shennong's Classic of Materia Medica in Qin and Han Dynasties. It is pointed out that the classification standard is that these drugs can make people feel safe. Among them, cinnabar is listed as the top grade of alchemy, and it is the first important medicinal material selected in ancient alchemy.
The alchemist decomposed cinnabar into mercury after heating, and then found that mercury combined with vulcanization produced black mercury sulfide. After heating and sublimation, it will return to the original state of red mercury sulfide. The process of smelting mercury from cinnabar and sulfurizing it into cinnabar is actually a chemical reduction oxidation reaction.
There are two very common sayings in Taoist alchemy: red sand burns into mercury and accumulates into red sand. Cinnabar is mercury sulfide. Cinnabar refining. The sulfur in cinnabar becomes sulfur dioxide and mercury is released. Mercury and sulfur combine to form mercury sulfide.
This is the method and steps of ancient alchemy.