"Either PTSD, some people have experienced a major traumatic event for the individual, often accompanied by nightmares, or "flashbacks" of some traumatic clips, etc., highly suspect that there is PTSD, but I don't think you have experienced any trauma......"

The last reason is that when you stay up late and can't control your drowsiness and fall asleep, the normal sleep rhythm is disrupted, and REM sleep may occur earlier or more "advanced compensation". At this time, if your body is not fully prepared for deep sleep, or the environment is not particularly comfortable, in short, you should not do too much excitement before you go to sleep.....

When Su Ling said this, his tone suddenly became a little obscene, and the implication was to let Pu Xingwen not think about something.

Of course, Pu Xingwen heard what she meant, and he didn't want to turn back to the obscene fox eyes when he gouged out his eyes......

"And the legendary ghost market can also be explained clearly by science," Su Ling retracted his joking tone, "But I see that you didn't put your mind down on studying when you were a child, and you also learned this thing before, but you can......'t remember it no matter how you look at it."

"Who said I didn't study hard! I know what this thing is! Isn't it just a mirage~" Pu Xingwen snorted lightly.

The historical book records the "Historical Records: Feng Zen Book": "Ziwei, Xuan, and Yanzhao make people enter the sea to seek Penglai, Abbot, and Yingzhou." The three sacred mountains, which are spread in the Bohai, are not far from the people, and when the trouble comes, the wind of the ship will lead them away. Cover the taste, the immortals and the medicine of immortality are in the air, its objects and beasts are white, and the gold and silver are the palace. Before it arrives, it is like a cloud; When it arrived, Sanshen Mountain was underwater; When it comes, the wind leads away, and it will never come. ”

It was also mentioned in "Mountain City" that Huanshan Mountain City, one of the eight scenic spots of Yi, has not been seen for several years. Sun Gongzi Yu Nian and the same people drink upstairs, suddenly see a lonely tower on the top of the hill towering, high inserted in the green dark, look at each other and be suspicious, and there is no such Zen temple in the near middle. No, see dozens of palaces, Biwa Feiyong, the beginning of the realization of the mountain city. Not long, the high wall is wide, even six or seven miles, and the city is actually a city. There are those who are in the building, those who are in the hall, and those who are in the square, vividly in their minds, and hundreds of millions. Suddenly the wind rose, the dust was reckless, and the city was vague. Even if the wind is clear and the sky is clear, everything is nothing, but there is only one dangerous building, directly Xiaohan. There are five buildings and the windows are open; There are five points in the line, and the sky outside the building is also. The higher the building, the less bright it is. Count to eight layers, cut like a star. and above it, it is ethereal, and its level cannot be counted. And the people upstairs come and go, either relying on or standing, not the same. Overtime, the building gradually lowers, and its top can be seen; and gradually as usual; and gradually like a high house; Suddenly like a fist like a bean, it is invisible. I also heard that there were early walkers, and saw that the mountain was crowded with people, and there was no difference between it and the world, so it was also called "ghost market" cloud. ”

Su Ling also felt that this was the case after hearing it, and he had learned some of this thing anyway.

A mirage is an optical phenomenon. The hot air on the sandy or stony surface rises, causing light to refract and create a mirage. Mirages can occur in desert areas about 6 miles from the coastline and can make objects 1 mile away or more appear to be moving. This makes it very difficult to navigate on land, as the natural features are blurred in a mirage environment. A mirage can make it difficult for a person to discern distant objects, and it can also blur the outline of the distant vision, making you feel as if you are surrounded by a piece of water, and the higher part of the area looks like an "island" in the water.

Mirages can also make it difficult for you to identify targets, estimate range, spot people, etc. However, if you go to a higher place and rise 10 feet above the desert floor, you can avoid the hot air close to the surface and thus overcome the mirage illusion. In short, with a slight adjustment of the height of the look-and-see, the mirage phenomenon will disappear, or its appearance and height will change.

Mirages are often produced in the sea and deserts, and mirages are the result of the refraction of light rays in layers of air with different densities in the direction of a straight line. There are many types of mirages: according to the position of its appearance relative to the original object, it can be divided into epimirage, inferior mirage and lateral mirage; According to its symmetrical relationship with the original, it can be divided into regular mirage, lateral mirage, paramirage and reverse mirage; According to the color, it can be divided into color mirage, non-color mirage, and so on.

"And the mirage is closely related to the geographical location, the geophysical conditions, and the meteorological characteristics of those places at a given time. The abnormal distribution of air temperature is the meteorological condition for the formation of most mirages.

As far as the formation of the mirage is concerned. In the summer desert when the scorching sun is headed, the sand is scorched, because the specific heat of the sand is small, the temperature rises very quickly, the temperature of the lower layer near the sand rises very high, and the temperature of the upper layer of air is still very low, so that the abnormal distribution of air temperature is formed, due to the cold contraction of the hot zhang, the density of the lower layer of hot air close to the sand is small and the density of the upper layer of cold air is large, so that the refractive index of the air is small in the lower layer and large in the upper layer.

When the light reflected by a distant higher object is constantly refracted from the denser air in the upper layer into the sparse air in the lower layer, the angle of incidence gradually increases, and when it increases to an equal to the critical angle, total reflection occurs, at this time, if people look at the reflected light in the opposite direction, they will see the mirage.

Due to the dark color of the pavement and the strong absorption capacity of the scorching sun in summer, the asphalt road will also form a distribution characteristic of cold and dense air in the upper layer and hot and low density in the lower layer of the road, so it will also form a mirage.

A "mirage" that occurs in the desert is a phenomenon in which sunlight meets different densities of air. In the desert, the sand and gravel are scorched by the sun during the day, and the temperature on the surface of the sand layer rises rapidly. Due to the poor heat transfer performance of the air, when there is no wind, the vertical air temperature difference over the desert is very significant, the lower is hot and the upper is cold, the upper air density is high, and the lower air density is low. When sunlight enters the denser layer of air from the denser layer of air into the less dense layer of air, the angle of light changes, and the light is refracted to reveal the distant oasis in front of people's eyes. On the surface of the sea or river, this phenomenon of "mirage" sometimes occurs.

A mirage is an optical illusion, a virtual image formed by the refraction of light reflected by objects on Earth through the atmosphere. According to the principles of physics, mirages are due to the fact that different air layers have different densities, and light has different refractive indices in different densities of air. That is, it is caused by the difference in density between the cold air on the sea surface and the warm air in the upper air, which refracts light. [

Mirage is a natural phenomenon formed by the refraction and total reflection of light, and it is a virtual image formed by the refraction of light reflected by objects on the earth through the refraction of the atmosphere.

The light that people in our space can see is within the range of visible light, and the substance we see is because our eyes can accept the visible light reflected by it. At night, we can't receive the infrared rays emitted by the substance.

Even in the visible range, we can't see if the light is too strong or too weak. The human eye is made up of the matter of our space, the largest layer of particles composed of the largest layer of molecules, and is only suitable for seeing light in a certain energy range.

If the molecule is slightly smaller than the largest layer of particles, the human eye will not be able to see it, let alone the space of smaller particles made up of molecules. To humans, the light reflected by these substances is invisible. However, the beings of this space can receive the light reflected by the matter of this space, and can see the matter of this space, because the molecular particles that make up their eyes are different from the molecular particles of the human eye.

A mirage is a true embodiment of another space. Under the movement of matter, it is reflected in our space. A type of mirage occurs at sea. The air humidity here is high, and the air humidity in the space within a certain range is relatively large, and the thickness is relatively large, so that a large area of water vapor can form a huge lens system under the movement. It's like a giant magnifying glass and microscope, reflecting the view of another dimension of the microcosm into our space.

Epimirages can be observed in almost any region, but are most commonly found in the polar regions, especially large areas of ice with consistently low temperatures. Epimirages are observed in relatively cold weather in the polar regions, but can be observed in hot days in deserts, oceans, and lakes. To create an upper mirage, the inversion layer must cause a strong deflection of light, and the deflection within the inversion layer must be greater than the curvature of the Earth's surface. Under such conditions, the light rays are deflected and become arc-shaped. One is that the observer's position must be in or below the atmospheric waveguide to see the upper mirage. From sea level to high mountain tops, and even from airplanes, the mirage can be seen at any altitude in the atmosphere.

Any reflection or illusion of an object that appears to be reflected from a layer of air in the sky is called a mirage. Upper mirages often occur at sea and in areas covered with snow and ice in the north. This is because the surface of the sea consumes heat when it evaporates and the temperature of the sea rises slowly, and in areas covered by snow and ice, the ice and snow surface reflects most of the sunlight and consumes a lot of heat when the snow melts, causing the temperature in the lower layers to become very low, so these places are most prone to strong temperature inversion. If there is a strong temperature inversion near the ground level, the air density will decrease rapidly with altitude, and the light will propagate in the air layer where the air temperature increases with the altitude, so that the air density decreases sharply with the altitude, and the light from the buildings on the distant horizon will be refracted into the observer's eye, and a mirage will appear.

The car was running on the highway, the white sun was scorching the road, and only the wind whistled and the motor roared, and the mind seemed to stop. Suddenly, a puddle of water appeared not far ahead, and the car driving in front of it also reflected a clear reflection in the water. But as the car moved, the puddle of water was always ahead, and finally slowly disappeared. This is a phenomenon that can often be seen on highways.

"And there's a story that's been going on all along. Once upon a time, there was a camel caravan wandering through the scorching desert. The scorching heat and dry weather have made the travelers tired, and their lips are dry and chapped with water in their leather bags, and how they want to have a sip of cool water!

Suddenly, far ahead in the desert, a lake appeared, and on its banks towered palaces and monasteries, giving them great hope and a cool premonition, and they rushed forward. Walk past dune after dune, but lakes, palaces, and monasteries are still far away, flickering and flickering, flickering, flickering. After a while, all of a sudden, the lake, the palace, and the temple disappeared without a trace.

In the calm and windless sea, the surface of the river, the surface of the lake, the snowfield, the desert or the Gobi Desert occasionally appear in the air or "underground" high-rise buildings, city outlines, trees and other illusions, we call this phenomenon mirage. This kind of illusion often appears on the surface of the Penglai Sea. In the ancient legends of our country, it is believed that the mirage is the genus of the dragon, and it can be exhaled into the outline of the tower, and it is said that the sea market is the residence of the sea gods, and it is located in the "ethereal and ethereal", so it gets this name.

Shen Kuo of the Song Dynasty wrote in "Mengxi Writings": "There are clouds in the sea of Dengzhou from time to time, which is the palace and the platform, the characters of the city wall, the crown of the chariot and the horse, and the history can be seen. ”

The reason why it is called "down" is because the image you see is below the actual object. The real object is a blue sky or a distant object in this direction, meaning that the object we see is actually colored blue on the ground in the distance. To the traveler exhausted in the desert, it looks like a lake; On the asphalt road, it looks like it is overflowing with water or even oil.

This is known as a "desert mirage" or "highway mirage". Both sand and tar can become very hot under sun exposure, and can easily become 10°C hotter than the air 1 meter above, enough to form a mirage.

Light rays from objects at a certain distance in the distance all pass through almost the same layer of air, and all have the same amount of deflection.

As a result, the light from the top of the object will now be lower than the light from the bottom, so these mirages are often inverted, and the sky enhances the illusion of the image, making the image of distant objects resemble a mirror image of disturbed water or the surface of an oil pit.

The image of the mirage is unstable. Hot air rises and cold air falls, so the layers of air mix, causing rising turbulence and distorting the image. It may also vibrate, or scale horizontally. If there are several different temperature layers, it is possible to mix several mirages, resulting in double (overlapping) images. In any case, the height of the mirage usually does not exceed the companion degree (equivalent to the apparent diameter of the Moon or the Sun) and is only a few kilometers away from the real thing.

Any reflection or illusion of an object that appears to be reflected from the ground is called a mirage. Most of the lower mirages occur in the desert during the hot season or at sea with warm currents in the winter. In the sunny and cloudless calm and windless weather, the sun shines on the dry sandy soil, the specific heat of the sand is small, the soil temperature rises very quickly, there is almost no water evaporation here, the heat transfer of soil molecules is extremely slow, the heat is concentrated in the surface layer, so the air temperature close to the soil layer also rises quickly, but the upper air is still very cold.

When the near-surface layer is a strong cooling layer, the air temperature decreases quickly with altitude, the air density increases with altitude, and the light rays will bend upwards when propagating in the air layer where the air temperature decreases with altitude.

Originated from the "don't be a person, only be a ghost", the chicken and dog thieves, take out the stolen things and sell them while it's dark, which is called "can't see the light". The old "ghost market" was in an open space, there was no light, and the people who visited the "ghost market" were either carrying lanterns or playing flints, the light was bright and faint, and the figures of people came and went; There are even profiteers who take advantage of the darkness to sell some unsightly fakes, buying and selling in the dark, and the transactions between the two sides are all based on wishful thinking, so the name of "ghost market" has gradually spread.

Overtime, the building gradually lowers, and its top can be seen; and gradually as usual; and gradually like a high house; Suddenly like a fist like a bean, it is invisible. I also heard that there were early walkers, and saw that the mountain was crowded with people, and there was no difference between it and the world, so it was also called "ghost market" cloud.

In the movie, the "ghost market" is located under the old imperial city of Luoyang, which is an underground water city, a place where cows, ghosts, snakes and gods hide from the human world and trade in the black market. Di Renjie and Pei Donglai came to the ghost market in order to find clues to the case, but they were ambushed, and there were dazzling fights here.

In Chen Guofu's view, there are some metaphors he has buried in commercial movies: "I believe that there are many things in the world that the emperor can control, and there are some things that the emperor can't control, the ghost market is underground, the Buddha is high in the sky, and those who engage in politics are in the middle." "I think of a strange world painted by a painter, where the whole world, the whole city, is upside down, and everybody lives on the beams of the roof, on the bottom of the roof, the floor is the ceiling, and the stairs come down from above, it's an upside-down world, and I want to create this kind of world." Tsui Hark was imagining his own ghost city, but there were many limitations to this scheme, such as how to build the ghost market upside down in this building, and how to present its effect.

Tsui Hark can't talk about the inverted ghost market in the movie, so he retreats to the second. A week later, Chen Guofu received a call from Tsui Hark: "There is a ghost market." Tsui Hark found an artificially developed cave called "Water Curtain Cave" in Lishui, Zhejiang. Because the water level was insufficient, Tsui Hark had the fire brigade fill 2,000 tons of water to create a water city effect. The environment of the cave is damp and cold, the water is cold and biting, mosquitoes fly everywhere, and there are often staff members who fall into the water or mobile phones fall into the water.

In Chen Guofu's view, there are some metaphors he has buried in commercial movies: "I believe that there are many things in the world that the emperor can control, and there are some things that the emperor can't control, the ghost market is underground, the Buddha is high in the sky, and those who engage in politics are in the middle." "I think of a strange world painted by a painter, where the whole world, the whole city, is upside down, and everybody lives on the beams of the roof, on the bottom of the roof, the floor is the ceiling, and the stairs come down from above, it's an upside-down world, and I want to create this kind of world." Tsui Hark was imagining his own ghost city, but there were many limitations to this scheme, such as how to build the ghost market upside down in this building, and how to present its effect. Tsui Hark can't talk about the inverted ghost market in the movie, so he retreats to the second.