This man was a head taller than most of the others, with a tiger skin (or possibly a leopard skin) around his waist, and a dragon-shaped pattern could be vaguely seen on his naked upper body.

It was clear that he was the leader of the group.

He first raised his torch and shouted "Woo Woo", and then everyone gathered behind him.

A minute later, the man slowly turned around and was facing me, but I still couldn't make out his face.

It's really evil! I muttered to myself.

Let's call him the Great Boss for now!

After the big leader waved his arms, he then muttered a lot of words that I didn't seem to understand, this should be the dialect of Shandong, and it stands to reason that I can understand it, but these words sounded like a stuck tape, intermittent.

I can vaguely hear that in these intermittent narrations, there are words such as "Chiyou", "Dongyi", "Eastern Expedition", "Zhulu", and "Yandi".

It is estimated that those who graduated from elementary school have heard the name of Chiyou, and they also know the shocking battle that happened 6,500 years ago. I have heard Uncle Shi mention these names many times before, Chiyou is the leader of the Dongyi tribe, known as the god of war, he brought the Dongyi tribe to unprecedented heights, drove the Miao tribe to the south of Jiangsu, and defeated the Yandi tribe many times.

Listening to the big chief's intermittent narration, it seems to be related to this battle.

What's going on?

At this moment, a flash of lightning suddenly streaked across the sky, followed by several thunderous sounds.

When I looked up, the sky was suddenly cloudy, and it looked like it was about to rain. When I looked down at the square again, I saw that the hundreds of primitive people had become looming, and their skin had changed color.

"Haunted!" Yu Lina's eyes stared at the scene in the square, and she couldn't help but shout.

Is it really haunted? I wondered in my heart.

Something even weirder happened. This group of primitive people loomed in front of our eyes a few times and then disappeared completely.

Everything is like magic, and hundreds of living people are like magic, evaporating before our eyes.

I couldn't believe my eyes, and hurriedly rushed up, where was there someone in the middle of the square! Not even a single hair.

After a few more flashes of lightning and thunder, it instantly began to rain heavily in the sky.

I have never seen such a big rain, and the raindrops are the size of peanuts, as if they were pouring down from the sky.

The two of them didn't care about the scene just now, and ran towards the house just now.

When they returned to the house, they were both chickens, and their clothes were soaked.

Muzi hurriedly took a white sheet to wipe the water on my body, and casually threw another piece to Yu Lina. Under the dim light of the kerosene lamp, I saw that Yu Lina's clothes were already soaked, and the pink sportswear was not thick, and her perfect figure was undoubtedly highlighted at this time.

The rain outside was getting heavier and heavier, and Yu Lina looked at the pouring rain outside, and seemed to be a little anxious.

After Muzi blew out the oil lamp, he called Yu Lina over: "Now that I blow out the lamp, Xiao Zhen can't see you, you take off your clothes, otherwise you will get sick if you are pressed by the moisture!" ”

Yu Lina hesitated, nodded, moved over, and took off the clothes on her body one by one.

Neither Yu Lina nor Muzi knew that my eyesight was extraordinary, even in the dark night, it was like day.

I have had the privilege of appreciating Yu Lina's delicate figure, and at the moment she is like a white chicken, and the grace is inconvenient to describe.

"Xiao Zhen, you sleep on one side, let's sleep on the other side!" Yu Lina said and groped her way into bed.

Then Muzi shouted at me again: "Xiao Zhen, you can take it off too!" The valley is damp, so be careful to get sick. ”

After hesitating for a moment, I took off my clothes one by one and lay down on the bed.

I don't know if Yu Lina did it on purpose, after lying down, she always touched me intentionally or unintentionally, sometimes touching my arm, sometimes touching my leg. It's just a fire! For a moment, my mouth became dry.

To distract myself, I recalled what I had just seen.

Is everything you see in the square an illusion?

Suddenly I thought of the word "mirage", could it be the scene I just saw and the principle of mirage?

Afterwards, I deliberately learned more about mirage:

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.

Mirages are closely related to geographical location, 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 air near the sand rises very high, and the temperature of the upper air is still very low, so that the abnormal distribution of air temperature is formed, due to the thermal expansion and contraction, 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 moves from the denser layer of air to the less dense layer of air, the angle of light changes, and the refraction of the light presents the distant oasis in front of people's eyes.

On the surface of the sea or river, this phenomenon of "mirage" sometimes occurs.

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.

There is no sea or desert, so if it is a mirage, how did it come to be?

I thought of a possibility, so I hurriedly asked Muzi.

Muzi was already dazed and about to fall asleep, and when he heard me ask, he replied lazily, "What's the matter, Xiaozhen?" ”

"Do you recall, when does the 'Heavenly Soldier and Heavenly General' appear?"

"Didn't you say that in the middle and late of each month in the summer and the season......

Before she could finish speaking, I snapped and said, "I'm asking, under what conditions?" Think about it, what similar things happened before and after they appeared?"

"What are the similar things...... Mu Zi paused and replied, "When you say that, there is really a very coincidental thing, that is, every time the 'Heavenly Soldier and Heavenly General appear, it will rain heavily. ”

Sure enough, as I thought, the appearance of this shadow had something to do with the rain.

The reason why I think this is because I watched a science exploration film on TV last year:

It is said that in a certain valley in Africa, there will be a scene of war in a special weather, even the sound of shouting and killing and the sound of horses can be heard very really, the locals think it is haunted, and they dare not approach this valley, and then go to a few Americans, and use modern instruments to decipher the "haunted mystery", it turns out that there was indeed a big fight here thousands of years ago, when there was lightning and thunder, nature "recorded" several of the scenes.

The wonder of nature is far beyond human imagination, human society only invented photographic equipment at the beginning of the 20th century, in fact, nature will be "video" thousands of years ago.

I suspect that the scene I just saw happened thousands of years ago, and by chance, it was cleverly recorded by nature, and then every time it rained, it was "shown" out.

Why before the heavy rains?

I pondered that after the ritual was inadvertently "recorded" thousands of years ago, perhaps hidden in the rocks, or hidden in a corner, the air before the rain was relatively humid, filled with many small water droplets, and with the magical effect of the small water droplets, these images were projected, which explains why these images appear in different places in the valley at the same time.

I carefully recalled the vague words I had just heard, and suddenly I was shocked: Could it be that the scene just now was the scene of the Yellow Emperor performing the ancestor worship ceremony before raising his troops to the Eastern Expedition?

The more I think about it, the more I think it's possible, so that tall and strong leader is the Yellow Emperor?

Imagine that the antique Li from twenty years ago also saw this scene on a night of lightning and thunder, and with his cleverness and perseverance, he must have deciphered this secret, and tried to decipher the words of the emperor in the video.

It shouldn't be that simple, these influences only prove that this was once the stronghold of the Yellow Emperor, who raised his army here, and after defeating Chiyou, he held a ritual to sacrifice heaven and earth here, and hid the artifact that helped him win the war somewhere in the valley.

……

Thinking about it, the picture of that time came to my mind, and the scene of the burly Yellow Emperor leading his troops eastward seemed to be right in front of me......

In a daze, I fell asleep.

As soon as I fell asleep, I felt something soft press down on me, and at the same time something pressed against my legs.