Doumu Primordial Soul Needle.
Doumu is the mother of all stars in the heavens. Within the human body, the acupoints all over the body are the myriad stars in the sky.
The Primordial Soul, however, was even more miraculous, being intimately connected to the human brain and mind.
When applied to medicine, the Su Family's Secret Transmission didn't just heal the body. By stimulating the body's own "starry sky" of acupoints, it sought to transform a person's very spirit.
A person's spirit governs their entire body. If the spirit is weak, a hundred ailments will plague them. But sometimes, if a patient's spirit is strong, miracles can happen even in the face of terminal illnesses that even Immortals could not cure.
The supreme Profound Technique of the Doumu Primordial Soul Needle was not to heal the body, but to heal the soul.
