At first, the old queen mother didn't believe it, thinking that it was the palace people who were aggrieved by Concubine Zhen, and deliberately scared her with these words, so she killed several eunuchs with a cane, until she personally sent her cronies to take a look at the palace wall, and then she was sure that there would be a ghost of Concubine Zhen being dragged away on the palace wall.

In addition, these palace maids and eunuchs who escorted Concubine Zhen back then were all afraid of ghosts, and they were directly hanged and thrown into the well, which added a touch of horror.

The old queen mother herself believes in ghosts and gods, and listens to the people around her mention the ghost of Concubine Zhen, and immediately feels that Concubine Zhen died too unjustly, and came to her for revenge, in order to eliminate Concubine Zhen's resentment as soon as possible, she ordered the eunuch to fish out Concubine Zhen's body and bury it beautifully, and at the same time did a ritual for Concubine Zhen in the palace, hoping that she would ascend to Bliss as soon as possible.

It's just that this kind of belated debt is useless, no matter how many rituals the old queen does, as long as it rains and thunders, the ghost of Concubine Zhen will definitely come out to do it.

Later, Deshou Gege, who came back from studying in the West, came to see the old queen mother, and found that everyone in the palace was talking about the soul of Concubine Zhen, and brought up this matter when chatting with the old queen mother, this Lafayette was also full of sadness, and bluntly said that he was really too hot at the beginning, and the girl Zhen was just not calm, and she was also angry back then, but she didn't expect to be taken seriously by the eunuchs under her subordinates.

Although the people in the palace were panicked, and everyone was haunted by the ghost of the concubine, in Gege's opinion, it was not like that.

She followed the prince's father to run foreign affairs in the West, and graduated from a Western school, and has received a scientific education, it is difficult to believe in any ghosts and gods.

For this reason, she waited until the thunderstorm ran near the palace wall where the accident occurred, and after the night, she really waited for the unjust soul to appear, only to see that on the palace wall, several palace maids and eunuchs appeared, and they dragged Concubine Zhen away to escort away the ghost, and the people accompanying her were so frightened that they didn't dare to exhale loudly.

The appearance of such a situation made Gege do the opposite, boldly walked to the palace wall, and carefully observed the ghosts on the palace wall.

This move frightened the palace people around her who were protecting her, and they were all afraid that Concubine Zhen's unjust soul would harm Gege, and they were not relieved until Gege returned safely.

This line is a bit dangerous, but it can be regarded as allowing Deshou Gege to see the unjust soul up close, she is sure that this is not the work of the unjust soul, but she doesn't know what it is, and then returned to the palace, consulted a lot of information, and consulted Dr. Yang, so that she figured out the truth about the ghost of the palace wall.

The palace walls of the Forbidden City are mostly vermilion, and when craftsmen made pigments, they would add a large amount of red iron ore to the dyes, which made the palace walls covered with a thick layer of ferric tetroxide.

In addition to being used to adsorb ironstone, they are also excellent materials for making recording and photographic equipment.

Back then, when Concubine Zhen was dragged away, it happened to be a thunderstorm, and when the thunder was hit, the thunder and lightning were attracted by the magnet on the wall, so that the whole wall was introduced to the thunder and lightning, and in the case of thunder and lightning, it became a simple photographic plane.

At this time, the palace maids and eunuchs who happened to escort Concubine Zhen passed by this palace wall, and their images were left on this palace wall.

Due to the need for electricity for photographic development, this wall is completely different from other walls at normal times, and it is only after the lightning is re-introduced that it is re-energized, and the pictures taken by chance in that year are projected.

Thunder electric, dull red wall, when Concubine Zhen's ghost appeared in the palace, the more these palaces thought about it, the more frightened they became, and regarded these recorded images as ghosts, when everyone saw these things, the rumors spread and could not be stopped.

As for the palace maids and eunuchs who hanged themselves, it was entirely because they saw these ghosts that they thought that Concubine Zhen was uneasy and wanted to take their lives, so they found a short sight in fear.

After telling the old queen mother the truth of his research, Deshou Gege completely dispelled her doubts, and specially picked a thunderstorm to make a lightning rod for this section of the palace wall.

As a result, the old queen mother's worries were dispelled, and since then, this Deshou Gege has been following the old queen mother as a female official until she got married.

After Song Siyuan finished this rumor, she looked at everyone: "If the palace wall is hit by lightning, it can be turned into a camera, then we are in the primeval forest, and it is more normal to find that these stone pillars can appear noisy ghosts, quartzite and magnet are not the same substance, but they both have the role of audio and video recording, which can be achieved scientifically." ”

Yue Guanchao sighed: "The palace wall in the capital is ghosted because it was struck by lightning, so what is the reason for this pillar forest to be recorded These sounds, just like you, the palace wall is a general antelope." ”

Song Siyuan seemed to have anticipated something from him, and explained: "It's because of the shock! ”

She picked up the metal veins: "Just now, I tried to tap the metal, this metal is like a tuning fork will vibrate and vibrato, these veins are interconnected, the vibration caused by the ground will make all the metal veins active, whenever the metal trembles, the sound of the vibration will be recorded in the stone, if there is a marching team here, the vibration will be intensified, and more noisy movements of the march will be recorded, at the same time, because this was a volcanic area before, there must be a magma layer and a geothermal layer underground, The changes in the strata occur at any time, and the forest is constantly recording at any time, recording all the sounds of stratum activity into quartzite. ”

"At night, after the sun disappears, the ground begins to change from heat absorption to heat release, and the rock continues to vibrate the arteries in the alternation of cold and heat, and the content of the recording is released randomly.

"If you don't believe me, we can do an experiment."

Song Siyuan picked up a piece of metal vein, then picked up a slightly larger stone, and then tied this metal vein with a sapper shovel, and as he regularly knocked on the worker shovel, the metal veins also continued to tremble, stirring up electric sparks on the stone, leaving grooves of different shades on the stone.

Then the metal vein was removed, and then the stone was heated close to the metal vein, and the veins continued to shake the stone, and the stone really began to vibrate rhythmically, exactly the same as Song Siyuan's beating rhythm just now.

Everyone saw the stone make a metallic thumping sound, and they already believed that it was real, but they still didn't know anything about the animal's fear of the canyon.

"What's the matter with animals being afraid of the rocks in the canyon?"

Xu Xiake knew that this problem was related to their continued journey, and if the animals were afraid of sounds, then their horses would probably not be able to cross the canyon, and solving this problem was a top priority.

Song Siyuan continued to analyze the current unknown situation: "Animals are not afraid of stones, let alone canyons, but of infrasound. ”

In nature, sound below 20Hz is infrasound, sound waves with a frequency of 20Hz~20kHz are called audible waves, and sound waves with a frequency of 20KHz~1GHz are called ultrasound.

The vibration conditions in this valley are completely impossible for ultrasonic waves to appear, and normal waves are audible sounds, which are only secondary waves.

Infrasound waves come from a wide range of sources, such as tsunami waves, ocean storms, meteorite explosions, volcanic eruptions, gunpowder explosions, aerial turbulence, magnetic storms, auroras, earthquakes, flash floods, galloping of chariots and horses, lightning and thunder, rain and rivers, and even butterfly disturbances and animal walking.

This kind of sound wave travels far and penetrates, penetrating gas, ocean, rocky soil at all, even stainless steel copper plates, concrete walls, masonry tiles, can easily penetrate, if the sound wave is wide enough, it can also penetrate cars and cruise ships.

Whether it is a human or an animal, can not withstand the impact of low-frequency infrasound, short-term experience of infrasound, will make animals become irritable, irritable, frightened and afraid, long-term exposure to infrasound, will directly harm the animal's internal organs and brain, the formation of serious internal injury, if deliberately make ultra-low frequency and high power infrasound, or even directly cause the animal's internal bleeding death.

Infrasound waves are generated entirely because of the vibration of objects!

These metal veins in the valley, under the influence of geodynamic and geothermal heat, will produce low-frequency vibrations, that is, when the quartzite is recorded, the infrasound waves generated by the metal veins never stop, even at night, the heat release of the soil and rocks never stops.

White, the entire valley and the peaks on both sides are constantly generating infrasound waves.

However, the sound waves that can be heard by the human ear are between 20Hz and 20kHz, and this kind of infrasound can neither be heard nor seen by the human ear.

Animals, on the other hand, can hear sounds below 20 Hz, and their fear when they hear the sound is incomprehensible to humans, and in the ancient context, it is completely understandable to understand animals as fearing the majesty of mountain gods or devils.

For any animal, as long as the infrasound waves are generated in nature, there must be some earthquake, ground movement, mountain rock explosion and other disasters, they instinctively want to seek advantages and avoid disadvantages, of course, they will stay away from here, no matter how they refrain from approaching.

"In a sense, the people who created the Ghost Whispering Pillar Forest were already aware of these characteristics, so they deliberately created this mysterious phenomenon to keep people and animals away from the valley."

Song Siyuan paused, in the end, he still made the sound of animals afraid of the canyon clear, and the vibration of everyone's connection veins pondered carefully, this is really the case.

She looked at the surrounding pillar forest: "I guess the infrasound waves generated here are only low-power, which can only play a role in repelling animals, if it is low-frequency and high-power, we slept in the cave all night, and we have already died of internal bleeding, but it does not mean that we are all unharmed." ”

Song Siyuan paused: "We don't know how big this valley is yet, and if we walk for too long, we will become inexplicably flustered, dizzy, and even vomit and have weak legs, all because the body perceives infrasound waves, which stimulates the animal's instinct to escape." ”

"We are human beings, we know that this sound wave is just a sound wave, and we can overcome it, these horses are animals, and for them, the infrasound wave is a warning before the catastrophe, they can't go into the valley in this situation."