One hundred and sixty ghost pills were absorbed quickly, and with Hao Zhi's current ability in the Spiritual Silence Realm, it only took less than an hour to absorb them all.

The first thing he experimented with was the upper dantian of soul refining,

Of the total spiritual power of 21.1 billion, he left 10 billion in the Lower Dantian, 1 billion in the Middle Dantian, and the other 10.1 billion into the Upper Dantian.

With the injection of a huge amount of spiritual power, the sea of spiritual power in the mud pill cave began to change violently.

At the beginning, the spiritual power ocean continued to expand in area, but after it exceeded 10 billion, the spiritual power ocean expanded to the limit, and then it actually began to shrink.

The speed at which the ocean of spiritual power shrinks is very fast,

The spiritual power in the entire upper dantian was like touching a black hole, centered on the purple aura above, quickly converging together, and finally converging into a diamond-shaped crystal.

Then his mind exploded another 6 kilometers.

Hao Zhi didn't think that soul refining would be of much help to the improvement of divine thoughts before, it was because there were too few divine thoughts of the third order of soul refining.

If you don't count the increase in spiritual power, the third-order soul refining of light and light, the expanded basic divine thought is only about 200 meters.

Then, for every 100 million spiritual power added to the upper dantian, the divine mind could increase by 50 meters.

Therefore, this time, the spiritual power of the upper dantian increased by 10.1 billion, and the spiritual power of light increased, and the divine thought increased by 5 kilometers, and after advancing to the fourth level, the basic divine thoughts increased to 1 kilometer, which added up to 6 kilometers.

Hao Zhiling's peak divine thoughts were 12 kilometers, and after adding these 6 kilometers, his divine thoughts expanded to 18 kilometers.

This increase in divine thoughts was actually expected by Hao Zhi, which was not unusual.

But it was the sea of aura in the upper dantian that turned into a diamond-shaped crystal that surprised him.

What the hell is this diamond-shaped crystal?

He infiltrated the crystal to see what was going on inside.

As the divine thought entered the crystal, the purple aura inside suddenly transmitted a piece of information, which instantly made Hao Zhi understand many things, just like a person with amnesia suddenly regained his memory.

This purple breath is Hao Zhi's life,

It is often said that the human soul has three souls and seven souls.

The three souls are the heavenly soul, the earth soul, and the life soul. The heavenly soul is the main yang, the earth soul is the main yin, the yin and yang intersect and the life soul, the life soul is the main life, and the main cause and effect.

Some often say that cultivating to become a yang god and cultivating a yin god are the heavenly soul and the earth soul.

But in fact, the heavenly soul and the earth soul cannot be destroyed, they are the basic units of the soul, just like the electron atoms and other particles in matter, they will only be rearranged or dispersed, not disappear.

The most basic human soul is actually a life spirit, which is composed of a combination of a heavenly soul and an earth soul, and different combinations constitute different life souls, which bring different lives.

The soul is the birthplace of consciousness, the manipulator of the seven spirits, and if the soul is not destroyed, the life will not die.

Life is actually immaterial, like aura, while Hao Zhi's consciousness is material, composed of bioelectric fields.

The interaction between the two was not perceptible to Hao Zhi before.

After refining the soul at the fourth order, the life soul was completely materialized, which allowed Hao Zhi to directly perceive the life soul and receive this information.

And this knowledge about the soul comes with the soul itself, just as people are born with the knowledge of opening their eyes to see and to eat with their mouths open.

This diamond-shaped crystal composed of aura is the new abode of the soul, which not only has strong protection ability, but is also the energy source of the soul.

So it's not wrong to call this diamond-shaped crystal the Purple Mansion, the Mansion of the Purple Soul.

After talking about the three souls, I have to talk about the seven spirits later.

The seven spirits represent the seven emotions of human beings, namely joy, anger, sorrow, fear, love, evil, and desire.

These seven spirits are material, and they are the most basic units of consciousness.

The life spirit is connected to the consciousness by connecting these seven spirits, and then to the body.

After having an understanding of the essence of the soul, Hao Zhi also understood what was going on with soul refining.

In the final analysis, soul refining is the evolutionary method in which the soul of life, the seven spirits, and the consciousness gradually detach from the body and finally can exist independently.

In the end, the soul does not need a body to survive on its own, so that it can achieve an eternal purpose without being affected by the birth, aging, sickness and death of the body.

Hao Zhi further understood the nature of the soul, and then his understanding of the ghost king also deepened.

In the past, he had always believed that ghosts were composed of fragments of consciousness after death, but now it seems that this idea is a bit biased.

After a person dies, the soul collapses, and the heavenly soul and the earth soul scatter and flee, and this process cannot be reversed.

The life soul of the ghost is formed by the disorderly reorganization of these scattered heavenly souls and earth souls under the action of aura, among which the number of earth souls is large and the number of heavenly souls is small.

In other words, the ghost is a new life, and it has nothing to do with the person before it was born.

Because ghosts have no body, they are born with seven broken spirits, except for a small number of fear and mourning, and none of the other five spirits.

When people die, the emotions of grief and fear are too strong, and some of the grief and fear will also escape from the body with the heavenly soul and the earth soul, and when the ghost soul is reorganized, these two spirits will naturally remain.

Ghosts attack people, and what they plunder is the seven spirits of people, and the fear and sorrow left by ghosts are the introduction.

In this process, if the attacked person dies and the soul dissipates, the ghost can also absorb some more heavenly souls and earth souls to strengthen its life soul.

And once human beings have aura, then their seven spirits are completely different.

As I just said, the seven spirits are the most basic units of consciousness, and with the addition of aura, the seven spirits of human beings are more firmly combined with each other, and the consciousness is stronger, and the seven spirits alone are naturally not easy to separate.

In such a situation, the ghost not only can't extract the seven spirits from such a strong consciousness, but it will also be sucked back if it is not done.

Then someone is going to ask again, can Hao Zhi strengthen his soul by absorbing the ghost's heavenly spirit?

Of course, this is impossible, doing so means that Hao Zhi's fate has changed, so is he still Hao Zhi?

So the ghost can do it, but he can't.

The fate cannot be changed, and once it is changed, it is another life.

Therefore, the ghost has advanced to the ghost king, not only the increase of spiritual power, but also the nature of its life.

Using aura to train the soul, what is practiced is actually the seven spirits of people.

As the number of the seven spirits increases, the connection between the seven spirits becomes closer, then the consciousness will be stronger, and after a certain level, divine thoughts can be derived.

The ultimate goal of soul refining is to establish a huge purple mansion in the upper dantian, which not only needs to accommodate the soul to live, but also can accommodate the consciousness composed of seven spirits in the future.

In this way, the three souls and seven spirits can break free from the shackles of the body and survive alone.

However, Hao Zhi doesn't like this kind of soul refining purpose, in his concept, a person is not only three souls and seven spirits, but the body is also an inseparable part.