The turbulent energy emitted by Linggen rushed through the muscles and blood vessels. Even if the dragon''s extraordinary physical quality was excellent, he was almost unable to bear it. He just felt that his body was like a blown balloon at any time under the continuous accumulation of this energy.


    There is a sense of blockage without venting.


    Long Bufan''s right hand shook and the blue ice sword was held in his hand. A set of sword style of lingxuanwu mansion was played. Every time he waved it, the bones in long Bufan''s body also made a crackling sound in such a sword move. At this moment, the original white and reddish bone marrow became bright red, and then several strands of golden stripes appeared in the red.


    One sword stabbed out one by one. The beds and desks in the bedroom were broken by the fierce sword spirit, and Yuan Jin cut the darkness like a sharp sword.


    In this way, long Bufan didn''t know how many swords he waved and how many hours he waved. He digested the excess energy in the sword move, so that the body could absorb energy wantonly. With the passage of time, the golden stripes in the bone marrow gradually became more and more dense, until most of the bone marrow in the body became red gold.


    "Poof!"


    Just then, long Bufan suddenly felt a sharp pain in his back, as if someone had stabbed his spine with a burning iron cone!


    Suddenly, long Bufan snorted with pain and burst into cold sweat!


    However, long Bufan is not surprised but happy, because the pain in the spine is equivalent to successfully bringing energy into the spinal cord!


    You know, the spinal cord is not an ordinary bone marrow. It contains extremely fragile central nerves to connect the brain. If you can''t harden the spinal cord, people''s dorsal vertebra will become a weakness of the flesh and can''t bear strong external forces. In the face of fierce attacks by highly trained martial artists, I''m afraid the spine will break inch by inch.


    Quenching the spinal cord is the last and most difficult step in refining the spinal cord. Even some martial artists who have reached the Shenhai period fail to complete the quenching of the spinal cord completely because of the lack of precious medicinal materials in the early stage, resulting in unstable foundation and physical weakness.


    Long Bufan was only in the yuan Dan period, and he used this rare elixir of the purple jade dragon root for thousands of years. Naturally, this fatal weakness will not exist after the endurance of the flesh.


    After successfully introducing energy to quench the spinal cord, long Bufan immediately stopped waving the sword, sat on his knees and guided the energy carefully. After all, the spine is the most important position in the bone. If he is careless, paralysis may occur.


    At the moment when the spinal cord completely turned red gold, the beast Yuanling, who had been wandering in the longbufan Dantian, spontaneously spit out the yuan pill that had been swallowed by it.


    The dark yuan Dan was slowly rotating in the cave sea. Originally chaotic and powerless, it suddenly became orderly and condensed into a vortex, like a nebula, wrapping yuan Dan in, like a cocoon.


    Long Bufan closed his eyes like an old monk. He inhaled slightly and exhaled slowly. I don''t know how long later, the yuan Dan in his body suddenly broke out of the cocoon. However, at this moment, the dark yuan Dan has become a half black and half white yuan Dan with two colors.


    Xuanmen realm!


    The symbol of Tianyuan realm is the connection of muscles and veins, the symbol of Yuandan realm is the condensation of true yuan into Dan, and the symbol of Xuanmen realm is to form a system that absorbs Yin and Yang.


    That is, the life and death realm of Xuanmen. Only when Yin and Yang intersect in the body can we condense the divine sea.