This marrow is a paste-like substance in the bone cavity. Because it has different distribution parts in the human body and has different names. The marrow is divided into bone marrow, spinal marrow and brain marrow.

The marrow hidden in general bones is the bone marrow, and the marrow hidden in the spinal canal is the spinal cord. The bone holes under the vertebra above the sixth cervical vertebra after the spinal cord passes through the neck and passes through the brain. The marrow hidden in the brain is called the brain marrow. The spinal cord and the brain marrow rise and fall and communicate with each other, and are collectively called the cerebrospinal cord.

The physiological function of marrow is to nourish the brain marrow, nourish the bones, and transform into blood. The marrow is based on the innate essence as the main material basis, and depends on the continuous replenishment of acquired essence, which is distributed in the bone cavity, and is introduced into the brain from the spinal cord to become the brain marrow.

Therefore, it is said that the brain is the sea of ​​marrow. If the brain is nourished by marrow, the brain is full and the brain is full, the primordial spirit will be vigorous, the ears and eyes will be bright, and the body will be strong.

If kidney essence is deficient and bone marrow is not nourished, bones will become fragile and weak, or have poor development, etc. The essence and blood can be regenerated, and the essence and blood can produce marrow, and the marrow can also transform blood.

The bone marrow can produce blood, and the essence is the source of blood transformation. The marrow is produced by kidney essence. The rise and fall of the essence in the kidney is closely related to the profit and loss of the marrow. Qi, blood, essence, and marrow can be generated by each other, so the marrow is related to the five internal organs, among which the kidney is the most.

After knowing the meaning of marrow, you can understand the reasons why practitioners of all dynasties attach importance to marrow cultivation and replenishment.

The "marrow-cleaning" technique is the essence of the cultivation of practitioners of all generations. To be clear, it is a technique of "dual cultivation of life and life".

The reason why it is named after "marrow washing" is because the word "marrow washing" contains profound and comprehensive content, which cannot be replaced by any other word.

The sage uses Tao to cleanse the minds of the acquired human beings to destroy the unrestrained places.

The brain is the sea of ​​marrow, and the brain is the official of thought. All thinking of the human body comes from the brain nerves.

This "marrow" belongs to the category of "nature exercise". The two words "cleaning marrow" can be combined as "cultivating the mind and nature" or "cultivating the mind and spirit". This is the Taoist cultivation of truth and nature, the Buddhist enlightenment of the mind and nature, and the Confucian enlightenment of the mind and nature.

Another meaning of the word "正" refers to the actual brain and spinal cord, which belongs to the category of "life and energy".

All organs and tissues in the human body perform their functions and maintain integrity under the leadership and command of the central nervous system of the brain.

If the central nervous system is damaged or disordered, it will cause diseases. Only by "cleaning marrow", breathing luck, exercising the yang essence into true energy gas, that is, after the inner elixir, it will go backwards along the coccyx and reaching the brain, nourishing the central nervous system, regulating its balance, restoring the connection between each nerve, enhancing the reflex of the central nervous system, and enhancing the reflex of the spinal cord, and the endings of each nerve are also excited, making the degenerate and aging nerve cells rejuvenate, and the white hair returns to blackness, and the teeth fall back, reaching the state of rejuvenation and rejuvenation.

Thus, it transcends the great wisdom that ordinary people cannot achieve and the limit of life span.

This heart is the official of the monarch, the great master of the five internal organs, the origin of the spirit, and the abandonment of the spirit, and the unity of the human spiritual consciousness and thinking activities into the heart, and it is called "the mind hides the spirit."

However, in the world of cultivation, the spirit is divided into five different manifestations: spirit, soul, spirit, mind, and will, which belong to the five internal organs of the heart, liver, lung, spleen, and kidney, and the so-called "five spiritual organs".

Although the spirit belongs to the five internal organs, it is more closely related to the heart, liver and kidney, especially the kidney, because the heart controls the mind, and although the five internal organs hide the spirit, they all play a role under the command of the heart.

The functions of the brain belong to the five internal organs. Only when the five internal organs have strong functions, full essence, clear yang rises, and orifices are unobstructed, can their physiological functions be exerted.

These five internal organs are a system and the whole. Although the human mental activities belong to the five internal organs, they are dominated by the heart. Although the brain is the home of the primordial spirit, the brain belongs to the five internal organs. The physiological pathology of the brain is closely related to the five internal organs.

The marrow cleaning skill is to complete the "marrow cleaning" project on the basis of harmonizing the five internal organs, repairing and supplementing the five internal organs.

The skill of marrow cleaning must not only be obtained through daily practice, but also always pay attention to recuperation in daily life. It must maintain dynamic requirements when walking, standing, sitting, and lying.

Because "marrow washing" is equivalent to rebuilding life, this project is quite long and arduous. If you are not careful, the furnace will collapse and the cauldron will be thrown away.

Therefore, Wu Feng usually needs to keep "walking without a stick when walking", so he naturally follows his duties and slowly keeps safe."

When he "stops", he must keep "staying like a horse on the cliff, or a boat on the shore, return to the light and look back, recognize the foot of the pause, separate from the thoughts, be careful not to do anything outside, and know how to stop, and be careful to keep the valley.

When standing, you should keep "stand firm and not tilt, your body is firm, your ears and eyes are calm, and your mind is calm, and you should keep water and mirror; everything is there, and everything is in full view."

When sitting, you should keep your seat as heavy as a seal, straighten your face, keep your mouth deep and hide your tongue, enter and exit your breath and nose, and return to the Yuanhai. When lying, you should keep your seat as curved as a basket, and follow the right side and right. The knees are always uneven, and the feet are like hooks.

Wu Feng followed all the secret method of cleaning the marrow on his body, and practiced every day. Anyway, he still had many pills on his body, which were piled up like mountains in his body space. He would eat when he was hungry, and give himself a cleansing technique when he needed to take a bath.

This little trick could almost instantly clean the dirt on his body.

He was like this, no matter day and night, as long as Miss Sun came out for activities, he would follow him, and he would not speak or interfere with Miss Sun's actions. He just watched how he did things. When it was inconvenient to follow, he would

Find a place to practice yourself, or check the environment in this ghost city.

All of this seemed to be in progress according to the contents that had been demonstrated in advance on the book, but Wu Feng found that there was a very important thing here that he had ignored before. That was, when he saw the contents in this book for the first time, there would be a war that involved all the forces in the Ghost City. However, so far, this war has not happened.

The reason why Wu Feng had pestered Miss Sun before was to use her identity and power to get herself out of Ghost City was because he thought that if this war happened, he might not be able to leave Ghost City.

But this war has never happened now. For this incident, he believed that there was nothing impossible in Ghost City, but it only needed some opportunity. What happened in the books before can be changed. There are some principles he did not know about, but one thing Wu Feng can be sure of is that everything that happened in Ghost City will inevitably appear in the books.

So I don’t know whether this happened in the booklet first, or it happened in the booklet because of this incident, or it happened in the booklet.

Wu Feng didn't know what kind of mysterious connections and conversion mechanisms there were in this situation, but he was like this. Since he couldn't figure it out, he didn't think much about it. He sat and looked at Miss Sun now, and saw when she was willing to agree to send herself out of this ghost city.

The reason why Wu Feng is so sure is that he is sure that no matter what, there will definitely be something unfavorable to Miss Sun in the Netherworld City. At that time, in order to raise his own help, Miss Sun had to send herself out even if she didn't want to send herself out of Ghost City.

It is because of this idea that Wu Feng is very comfortable in the Ghost City, and he seems to be neither impatient nor impatient. He practices every day and follows Miss Sun.

The days passed day by day, and Wu Feng's cultivation was also growing day by day. Even the growth was very fast. Finally one day, Wu Feng found that he had reached a bottleneck of breakthrough without realizing it.

This is a natural thing. If you accumulate strength, you cannot make such a simple breakthrough. You must prepare in advance. It is best to choose a place that can absorb a large amount of spiritual energy so that you can break through the bottleneck in one fell swoop and achieve a perfect state.
Chapter completed!