The furry teddy bear-like alien with long hair and the characteristics of a legendary savage said disapprovingly: " For example, the peaches and other fruits we have are not so small, we are big here, all of them are like watermelons, the grass is as tall as trees, the sea here is like a stream and a small river on our side, the famous rivers and mountains here are like inconspicuous mounds in our place, our dog-like creatures are called barabas there, the smallest ones are the size of your tigers here, the rabbit-like species we call them Momimocha, the ears are as long as deer, in short, our planet is very small because of gravity, and the plants and animals that grow on it are relatively largeYou can imagine it if you look at us. All in all, if you are lucky enough to be able to go to our planet, you will definitely think that it is a great planet, you will be stunned and eye-opening, so when we first landed here, we couldn't adapt to the environment here at all, and we felt that we had come to the Pocket Country, the Lilliputian Country in general, especially your Great Song Dynasty people built a house that was too small, completely like a model, and the bed inside was smaller, like a stool, so that we couldn't stay at all, and those who were lucky enough to see our Great Song Dynasty people, as if they had seen ghosts, saw us and shouted and screamed, because we looked too different and eye-catchingBecause the gravitational pull on the earth determines that structures with large heads and small bodies cannot survive at all, and the heads will crush the body, so earthlings must be structures with small heads and large bodies to reduce the pressure below. And our alien gravity is small, although we grow tall, the body structure of our people there is a slightly larger head and a smaller body, only in this way will the disproportionate head not cause pressure on the lower part. So it's completely different from the people on your side,

So we have no choice, in order to avoid people's eyes and ears, and in order to live a better life, we can only carefully select among the dense caves in Shennongjia in the deep mountains and old forests to find a hidden cave where we are now, and live for a long time. By the way, the level of physics on the side of the Great Song Dynasty is still much behind our level, and the level of art and culture is a little higher, you probably don't know what gravity is, it's actually very simple-"

We are about to say that we know this gravitational force, but the alien probably also likes Wang Po to sell melons, selling and boasting, he is quick to talk, can't wait to say, their reaction speed is much faster than our human beings, naturally he is the first to get there, just give him a rare opportunity to fully display the alien civilization, it seems that people, whether they are earthlings or cosmic people, have a heart that shows off their love to show: "In fact, gravity is the force of mutual attraction between all objects with mass. This force exerted by the Earth on other objects is called gravity. The direction of gravity experienced by other objects is in any direction. According to Newton's law of gravitation, there is a gravitational force between any two substances that have mass. The Earth itself has quite a large mass, so it also exhibits gravitational pull on any objects around the Earth. Take a cup as an example, the earth shows gravitational pull on the cup at any time, and the cup also shows gravitational pull on the earth. The mass of the earth is too large, and the gravitational force on the cup is very large relative to its own mass, and the acceleration is relatively large, so the cup is attracted to it, and the direction is towards the center of the earth, and this force is gravity.

Gravity is not equal to the gravitational pull of the Earth on an object. Due to the rotation of the earth itself, in addition to the poles, the objects in other places on the ground are moving in a uniform circle around the earth's axis with the earth, which requires a centripetal force pointing perpendicular to the earth's axis, and this centripetal force can only be provided by the earth's gravitational force on the object, we can decompose the earth's gravitational force on the object into two components, one component F1, the direction points to the earth's axis, and the magnitude is equal to the centripetal force required for the object to move in a uniform circular motion around the earth's axis; the other component G is the gravitational force experienced by the object, where F1=m2r( is the angular velocity of the Earth's rotation, and r is the radius of rotation of the object), and it can be seen that the magnitude of F1 is zero at the poles, increasing with decreasing latitude, and the maximum F1max is in the equatorial region. Because the centripetal force of the object is very small, in general, it can be considered that the gravitational force of the object is the magnitude of the gravitational force, that is, the effect of the rotation of the earth can be omitted in general. In fact, we also talked about this issue with Mr. Wang Dalong, according to Mr. Wang Dalong, he came to the era of someone knows, his name is Newton, he is a great physicist, it is said that Newton went to the countryside to play, and then leaned under an apple tree to rest, suddenly, an apple fell from the tree and smashed on Newton's head. He thought that if the apple tree kept growing until it was as high as the moon, then the moon would be the apple, and he wondered why the apple would fall from the top instead of rising from the bottom, why would the moon not fall? Subsequently, Newtonian Physical Gravitational Mechanics appeared. This became a new beginning for physics. Now you know what gravity is. “

Xiao Fei couldn't help but say: "In fact, we also know what the earth's gravity is, gravity, we are the same as Mr. Wang Dalong, in fact, we are also people who have crossed over from modern society, and we are also people from the future society, but we can't go back, so we can't do anything about it, so we can only be trapped here." The alien hurriedly said enthusiastically: "That's really good, it makes us happy and surprised, no wonder we are so close to you, I cherish each other." It turns out that they are all fallen people at the end of the world, why should they have known each other when they meet. Hey, we are also with you in the same disease, we are almost two hundred years, living in this deserted deep mountains and old forests, only a dozen of our kind here, feeling lonely, helpless, we miss our red planet very, very much, but unfortunately only at night, looking at the starry sky, hanging lovesickness, we can understand your mood at this moment, really empathetic. “

I said curiously: "But you look a little the same as the legendary savage, may I ask if there is a savage in this Shenlongjia, have you seen it? The "Xingshan County Chronicles" compiled during the Tongzhi period of the Qing Dynasty contains - the Shennong Mountain Range comes from the Taiping Mountain at the junction of Daning, Xinghu and Beifang County in Sichuan, extending 90 miles to the Jiudaoliang Mountain of Fang County, and entering the county border for 90 miles to the west as Shennongjia Mountain, which is the most secret and dangerous obstacle in Yiyi, with many fierce beasts, producing 100 medicines, and common human tracks. There are also unearthed Han tombs, there are bronze cast nine sub-lanterns, with two big eyes, thick eyebrows, hair, no tail, and a humanoid animal with hair on its body sitting on a tree, like an ape and like a man, and is looking into the distance. This shows that in the Han Dynasty, there was an image of savages, so do they mean you when they say these savages? ”

Xiao Fei also echoed and said: "Yes, I have seen the news of wild men in many books, and I have heard many legends about wild people, since you are not wild people, then have you ever seen wild people, for example, the book says that there is a black seedling cave, in the middle of ten thousand mountains." Eight hundred miles in the northwest, all of them are mountains and strange mountains, and there are thousands of Miao caves, and no one dares to enter. Some woodcutters strayed into the cave and could not get out when they got lost, and saw several black men covered in hair, talking like birds, nesting in grass, and perching on the top of trees. When he saw the woodcutter, he was happy, tied his hands and feet with vines and hung them on the treetops. The woodcutter is self-divided. Oh, an old woman came from his nest, with white hair and high hair, slightly resembling a human shape, and her speech was like a Chu voice, and the woodcutter said: Why did you stray into this cave? I am also a person from the county of Fangfang. Kangxi was famine every year, begging and fascinated into this hole. Zhu Heimiao wanted to eat me at the beginning, and then touched my lower body, knowing that it was a woman, so he stayed in the nest as his wife. Referring to the two black-haired people, he said: My son is also listening to me, I should save you. The woodcutter thanks. The old man took up the tree, untied it personally, and several chestnut dates came out of his sleeve and said: Cure your hunger. The two black-haired people whispered for a long time, and their words were indistinguishable, with a branch in their hands, and a cloth towel on it, saying: There are people of the same kind who want to harm my neighbors, so as to show it, so that I can know my intentions. Ermao people sent woodcutters, and they traveled for three days before they had to return the same way. People on the road said: This black seedling cave is also, and those who are lost are all eaten by it, and there is no return. It is also related to Xu Shangen, a native of the East, who digs ginseng as his business. Those who dig must dig at night. Xu was tired at night and slept on the sand. and woke up, he was hugged by a long man, two feet long, and red hair all over his body. With his left hand, he stroked his body and rubbed his hair with his body, like a person who plays with pearls and jade. However, every time he rubbed it, he laughed wildly. Xu Zifen will be fruitful. Russia and hugged to a hole, tiger tendons, deer tails, ivory and the like, forest mountain accumulation. Put Xu on the stone couch, take the tiger deer and then serve it. Xu was overjoyed, but he couldn't eat. The elder man bowed down thoughtfully, and nodded his head if he had gained, knocked the stone into a fire, drew water and burned the pot, and entered it for cooking. Xu Da sighed. At dawn, the elder man came out with his arms back, carrying five arrows, to the cliff, and bound to the tall tree. Xu Fu was shocked and suspected that he would shoot himself. In Russia, the tigers heard the popularity, and they went out of the hole and fought for permission. The elder man drew the arrow and killed the tiger, reuntied the hug, dragged the dead tiger back, and cooked as before. Xu Shi realized: The elders raise themselves to bait the tiger. If it is more than a month, Xu is unharmed, and the elder is actually fat. Xu thought about home one day, knelt in front of the elder and wept and bowed again, pointing to the east. The elders are also in the dark. Hug back to the ginseng collection place, show the way back, and refer to the ginseng production place for the calendar, showing the reciprocation. Xu will be rich from now on. In the early years of the Western Zhou Dynasty more than 3,000 years ago, the ethnic minorities in the southwest of our country mentioned the story of paying tribute to King Zhou Cheng with red-haired "savages". The Book of Shang, written 3,000 years ago, describes the savages as follows: the state is a person who turns his head and laughs at himself, and he hides his face when he laughs. The "Classic of Mountains and Seas", which was written in the Warring States Period, has a passage that says - Xiaoyang Kingdom is in the west of the north chest, with long lips and a black body, and he laughs when he sees people. In the 30 volumes of "Youminglu" compiled by Liu Yiqing, the king of Linchuan in the era of Emperor Wen of the Southern Dynasty, it is recorded that there are things in the mountains of Dongchang County that are shaped like people, four or five feet long, naked and draped in hair, and their hair is five or six inches long, and they often live among the high mountains and rocks; Li Shizhen's "Compendium of Materia Medica" in the Ming Dynasty recorded: Nankang has a god called the mountain capital, the shape is like a person, long and long, black, red eyes and yellow hair, and the deep mountain trees are made of caves. Are these savages really real people, or are they your companions, or are the ancients blinded and spread false information?"

The alien smiled and said: "Your ancients are right, they didn't look dazzled, what they saw should not be us, it should be a real savage, we generally don't show people easily, in fact, there are really savages here, but after we came, they felt that we were a threat to them, afraid that we would eat them, they had already moved their nests, they were more than tall, covered with long hair, and often went to the mountains to man-eating chickens and dogs, even bullets could not hurt them." It is said that the local villagers subdued the Mao people, as long as they applauded and shouted: "Build the Great Wall, build the Great Wall", the Mao people would flee in fright. The old man said that this was the Qin Dynasty to build the Great Wall, and people fled to Fangshan, and over time they became wild hairy people. When the Mao people saw people, they must have asked if the Great Wall had been repaired. So knowing that they are afraid of it, I use it to scare them. Although thousands of years later, they are still afraid of the edicts of the Qin Dynasty, according to which you can imagine the demeanor of your first emperor Qin Shi Huang back then. However, we detected that they had crossed the mountains and moved to Fangshan in Hubei en masse, which is not far from here. But we don't look like them at all. “

I looked at them as fluffy as teddy bears, and I couldn't help but ask curiously, "They look exactly the same, but what's the difference, and do all the people on your planet look like you?"

One of the aliens laughed heartily, and he said mysteriously: "Now is the time for you to see our true faces, but don't be shocked when you see our true colors later." So they calmly in front of us, carefully on the body, groping on the face, after taking off the layers of things on the body, this revealed their true face of Lushan, let us still be a little surprised, unbelievable feeling, it turns out that we took them for granted before as savages, that is, they dressed up in disguise, and the savages we imagined are completely different, because they were dressed up with fluffy fur sewn clothes, and the face is also a fur mask, and now they finally see their true face of Lushan, it turns out that aliens look like thisIt was an eye-opener for us to start looking at them again.