Millions of years ago, when the earth was still in primitive times, the ancestors of humans were only apes climbing on trees. For various reasons, they degenerate their gripping feet, and under the guidance of nature, the law of natural selection, they strive to develop themselves and eventually become the rulers of the earth.

The brain plays an irreplaceable role in this process. Although the brain is one of the most fragile organs in the human body, it has absolute leadership, and it is constantly running at high speed. As the central system that dominates human activities, the brain is no less complex than a supercomputer, and the number of neurons can be compared with galaxies in the universe, and a small instruction can be quickly reacted, which shows how amazing the brain is.

With the continuous development of quantum mechanics, scientists have discovered that there is also a kind of quantum entanglement in the brain, and consciousness is generated by the action of neurons and electronic signals. Recently, scientists have successfully resurrected dead pig brains, thanks to the relevant theoretical basis and technical conditions.

In the future, scientists are also expected to collect and organize data on the human brain based on the experimental results, so as to formulate a rigorous plan to implement the conscious output of the human brain. If the reproducibility of the human brain is confirmed, then it is equally possible to turn certain episodes into reality.

In addition, if the information in the human brain is converted and output in the form of code, a computer can also become a carrier of consciousness, and we may be able to achieve 'immortality', and explore the universe in a unique form after leaving the body, and our thoughts and emotions will not change."

The development of science and technology itself is a process of constantly transforming itself and exploring the outside world. One day in the future, people can extract their consciousness before dying, copy it into a new medium, and start a new stage after experiencing normal life.

For each of us, talking seems to be the least strenuous activity. In fact, it is the most complex human movement. It requires not only precise dynamics and the various tissues of the vocal organs that coordinate the vocal tract, but also neural activity in the brain.

However, just some time ago, scientists successfully decoded brain waves, using high-tech means, can directly generate speech in the brain, that is to say, human consciousness can also be directly transmitted.

In the world of physics, its length and time can be measured, and the measured physical quantities are all real numbers. That is to say: the material world is the real space; In quantum mechanics, the particles that make up the physical object are a wave function, but to the confusion of scientists, this wave function is a complex number, which contains real and imaginary numbers.

Why is the wave function of an actual particle a complex number that cannot be measured?

Therefore, we have to square this complex number and turn it into a real number to express the probability of the occurrence of this particle. But as the meaning of the particle's complex wave function suggests, there may be an imaginary space coexisting with the real space. It means that in addition to the real space of the material world in which we live, there is also an imaginary space that forms a conjugated state with our real space and cannot be measured by current scientific means.

Thus, the universe may be made up of an octave of plural space-time.

The world we live in is composed of the four dimensions of "length, width, height, and time", which is a real space, which is the material world, and is also commonly known as the "yang world", which is a real space-time.

And in this real space, there is an imaginary space. It also has four degrees, which is another world outside the real space-time of the fourth, a highly intelligent information field, and an imaginary space-time.

Where there is yang, there must be yin, and yin and yang are combined, and the two contradict and oppose each other, but they are inseparable. Therefore, two different time and space, one real and one virtual, and two worlds that overlap each other, are a symmetrical world, a complete and real world.

In this way, the real space and the imaginary space constitute the 'universe' as we know it. Real space-time and imaginary space-time constitute a 'plural space-time', which is a complex 'cosmic space-time'.

In quantum mechanics, when an object enters a quantum state, consciousness arises naturally, and although consciousness has no place in materialism, consciousness obviously has a certain physical basis, that is, the emergence of imaginary numbers.

In mathematics, the complex number x is defined as a pair of binary ordered real numbers (a, b) and is denoted as z = a + bi, where a and b are real numbers and i are imaginary units. "i" is just a symbol in mathematics, but in physics, it is no longer a symbol, but represents consciousness, and when any complex function appears, the imaginary number represents consciousness.

In quantum mechanics, the wave function that describes any microscopic particle that makes up all matter in the macroscopic world is a complex number. Since 1926, quantum physicists have not been able to understand complex numbers with known science, because everything must be measured in real numbers, how can a complex number run out? This is really impossible to explain, so it becomes a probability, time t, position r, this is a very big puzzle in the history of science: a deterministic equation, there is a random theory!

However, as long as it is understood from the perspective of "plural space-time", then whether it is in philosophy, physics, or psychology...... All perplexing questions will be solved.

Therefore, consciousness is a quantum phenomenon, which can also be called: 'quantum mind'. Consciousness, then, refers to the emergence of the quantum state, that is, 'everything has a spirit' – as soon as an object enters a macroscopic quantum state, an imaginary number appears, and consciousness appears. Real numbers are matter. Emptiness and reality constitute a world where mind and matter are one.

According to quantum mechanics, every elementary particle includes quarks, electrons, protons, and neutrons, all of which have spins in either upward or downward direction, and the angular momentum of the spin is h/2 regardless of its mass (where h is Planck's constant divided by 2π).

As a result, each particle has a passage into the void, and the passage is omnipresent. The communication between real and imaginary space-time must be communicated through a vortex space-time structure, so that the information can go from yin to yang or from yang to yin.

Well, one of the most likely communication channels is: 'Spin of particles'.

Real space-time and imaginary space-time are both the yin-yang, virtual-real parts of plural space-time, but there is an insurmountable obstacle (yin and yang separation), and energy is exchanged only through many special space-time points of different sizes, and these connection points are all vortex space-time structures. It can be inferred from this that the fisheye on the three-dimensional Taiji three-dimensional ball is actually a vortex structure, and the two parts of Taiji Yin and Yang are the imaginary space and the real space, and the two are mutually reinforcing, and their energy can only communicate with each other through the fisheye (the space-time structure of the vortex).

Therefore, although there are many fisheyes in real and imaginary space-time, there are many fisheyes with a vortex structure, which can communicate with each other and exchange energy. But only when matter is smaller than the size of the vortex or enters a special quantum state, otherwise it can only be separated by yin and yang.

Therefore, ordinary matter can only exist in real space-time. Only when matter such as elementary particles, photons, or objects enter a microscopic or macroscopic quantum state, and its quantum state must be described by complex fields, when complex matter waves appear, and the matter waves are not limited by the size of the vortex, they can pass through the vortex junction and tunnel into the imaginary space-time (the underworld).

The sudden fall at the beginning made Li Heizi unable to adapt for a while, feeling dizzy, but the darkness that followed made him feel terrified of a ghost king realm.

Just as he felt like he had hit the ground, a strong wave of air swept over him, causing him to pass out in a daze. Li Heizi, who had passed out, let go of his yin power uncontrollably, filling this town boundary monument that was only the size of a palm.

"Click~"

This palm-sized place from the Yang World to the Yin to the Cold Place, without anyone being able to detect it, showed a trace of cracking, and the circumference of the crack became longer and longer, and soon reached an oval circumference with the height of Li Heizi as the short diameter.

However, this oval does not develop vertically or horizontally towards the yang world; Rather, it is developing towards the void world of the Yang World plane. It's just that as this oval continues to grow, the interface between this emerging underworld ghost mansion and the yang world is also increasing.

A month after the secular Yang world, that is, ten thousand years after Li Heizi's ghost mansion in the underworld, Li Heizi finally woke up from his coma, and he looked at this world of his own in a daze, and immediately resonated with this world, and learned everything about this world.

Now his world is only about ten square meters, and his palace is only about one square meter, which can only be used for him to meditate and cultivate.

The town boundary monument only explains how to do it, and does not introduce what will happen when refining the sacrifice, that is, the situation encountered by the ghost king of each refining the town boundary monument is different.

According to the hint on the town boundary monument: after he woke up, he should immediately go to Emperor Du Ziren to report the location of his ghost mansion. However, because Emperor Du Ziren gave him seven town boundary tablets at that time, he did not go directly to Emperor Ziren to report the location of his ghost mansion. Instead, he hurriedly found a perennial shade and few people in a place where he was yin and cold, and sacrificed his second town boundary monument.

This time, it took him a hundred days in the secular yang realm to wake up, and his second world was still ten thousand years, but this world was obviously several times larger than the previous world, with the appearance of fifty square meters, and his human palace was also much larger.

However, his third world was not so lucky. The appearance of the secular yang realm for a few days, his world is still ten thousand years past, this world is only a few square meters, and his people's palace still has no place to put his feet.

After all his seven town boundary tablets were refined, the time of these seven underworld ghost mansions and secular yang realms was not the same, and the area was therefore different, but the time inside them was the same - the time for the awakening of the town boundary monuments was: 10,000 years.