"Cryopreservation" technology can be traced back to 1967, which mainly studies the influence of body temperature on life span. The purpose of "cryonics" is to preserve the life of the living, not to bury the dead. The specific operation process of Alcoa Life Extension Foundation's "Cryopreservation": Cryopreservation is to do something at the first moment when the heart stops beating. Once Alcaud's client is declared dead, a special response team will arrive immediately, cool his surface with ice water, and then give him cardiopulmonary support and oxygen support to keep his blood circulation. Then proceed the freezing procedure as soon as possible, drain the blood and inject glycerol solvent to prevent frostbite. The patient was wrapped in a blanket and put upside down in a stainless steel tank filled with liquid nitrogen, and his temperature gradually dropped to-196℃.

The previous freezing technology failed because during the freezing process, although metabolism stopped, ice crystals were formed in human cells, which destroyed human tissues and led to human death. However, Alcott's technology is not freezing, but "vitrification". Vitrification is a process that does not produce ice. After all the water in the human body is discharged, antifreeze is injected instead of blood. Here, more than 60% of the water in cells will be replaced by protective chemicals, so that the human body can be deeply refrigerated to prevent freezing. Different from freezing, in the process of vitrification, the movement of molecules becomes slower and slower until-124℃ stops completely. In this process, it will not freeze and there will be no related harm.

If the basic structure of the human body can be well preserved, it can make people stop or start again; Vitrification is not a simple freezing, it can preserve the human body well; It is foreseeable that the physiological structure repair technology at the molecular level.