Opening the stone door, they found a palace. The cloisters in the palace are winding and twisting. The floor of the palace is as smooth as glass and crystal. People walk on it, but strangely they don't feel or worry about slipping or even falling at all. Every pattern in the palace is even stranger. Du Ruolan looked at this place like a square lined with stone pillars, and he thought that this was the hall of the palace. When you walk out of the hall, you will be greeted by a glittering golden door. The gate is also a gold giant. But the golden gate is hidden. This is the main hall of the palace. On the left side of the palace, crescent-shaped side halls are distributed. There are about six of them. Each half-moon-shaped side hall has a closed door. All the gates are made of silver and are tall. It is about four meters tall and three meters wide. The gate is carved with various moons. There is a full moon, there is a waning moon, and there is a half moon. Some are like a bow, and some are like a silver cake that has been bitten. All the gates are also half-moon shaped. Du Ruolan just glanced at it blankly. Turning his head to the right, it is also a side hall. To his surprise, he also saw six side halls. Each side hall is distributed in a perfect circle, exactly a regular hexagonal arrangement. Each side hall is colorful and different, like a bizarre stone pillar. Counterclockwise, black, white, blue, red, green, and violet. What materials were used to build the black palace, Du Ruolan couldn't see clearly. The white palace is made entirely of jade like congealed jade, and looks like a full moon or a sun in the distance. The blue one is like a cloudless sky, like a wash. The red one is like a red flame, and it is completely built of red agate stone, which is magnificent. The green one gives people a tenacious affinity for life, which makes people think about it and boil their blood. Du Ruolan felt that he was about to fly up and pounce. The purple one made Du Ruolan feel bored. He didn't like it very much. Lu Xian'er saw that Brother Hu was infatuated, and couldn't help but push him.

What do you think! What about Sister Yiyi? Lu Xian'er asked.

Oh! Du Ruolan came to her senses for a while and replied: I don't know.

Find Wow! Lu Xian'er was almost pleading.

Only the golden gate is open, will Yiyi be there? Du Ruolan said.

Could it be that aliens are demonstrating against us earthlings? Du Ruolan said.

Why are aliens demonstrating? Lu Xian'er said: I oppose your violent imagination. Since it was a demonstration, then the scientific skills of the aliens were so developed, why didn't they just destroy the earth!

Destroyed the Earth? Du Ruolan asked thoughtfully.

That's right. Lu Xian'er said: Aren't scientists looking for and studying prehistoric civilizations today?

Do you believe that prehistoric civilizations on Earth really existed? Du Ruolan said again.

Most likely. Yang Momo said: Archaeologist Xia Lao. Dr. Legar found an intact color television in a newly excavated tomb on the banks of the Nile River in Egypt. This discovery caused a sensation in the scientific community. The television has four triangular phosphor screens with gold-plated trim and an interior made of titanium, the world's most advanced metal from the beginning of the 21st century. At the time of excavation, the solar cells were still functioning, but they could no longer display images. Experts deliberately put it together with other artifacts in the tomb through scientific identification, proving that this color TV has a history of more than 4,200 years, and it is the earliest color TV in the world found so far. But what is puzzling is that 4,200 years ago, ancient Egypt was still a slave society, how did they have such a level of advanced technology? As a result, scientists speculate that there is a high probability that there was still a prehistoric civilization.

Yes, archaeological and scientific discoveries are both exciting and confusing. Du Ruolan said: In Okero, a famous uranium mining area in the Republic of Gabon, scientists have discovered an incredible prehistoric ruin. That's the old nuclear reactor. According to research, the mine was formed about 2 billion years ago, and the nuclear reactor began operation shortly after the mineralization, and the operation time was as long as 500,000 years. In the prehistoric era 2 billion years ago, the most primitive life had just sprouted on the earth, and the emergence of human beings was only two or three million years ago.

Based on this information, do you think there was a prehistoric civilization? Lu Xian'er asked: So, where did the humans of the prehistoric civilization come from? It's incredible!

This is the necessary and necessary topic that we on earth people have to explore and study today with the development of high technology. Yang Momo said: The appearance of flying saucers has brought great surprise and unprecedented excitement to us earthlings. Aliens do exist. If Darwin's theory of evolution in the twentieth century is perfectly correct, then there is only one explanation, and that is that prehistoric civilizations are most likely extraterrestrial civilizations.

Are you saying that aliens came to Earth during the prehistoric civilization? Du Ruolan said: I'm also confused. Since science and technology were very advanced in the prehistoric civilization, why didn't this high civilization continue to be passed on? Prehistoric civilization disappeared in an instant, how do you explain it? Do you really believe that God created human beings?

Yes, I have to accept what the Bible says. Yang Momo said: Science and civilization, ignorance and ignorance, the wisdom of outer space and the mysteries of the universe may exist at a critical point. One step forward is science and rebirth, and half a step back is hypocrisy and death.

Momo——, come and see, there are numbers and words here! Lu Xian'er suddenly shouted loudly.

Yang Momo and Du Ruolan immediately rushed over. With the direction of Lu Xian'er's finger, they were stunned in surprise! In each row of the corpse forest, Yang Momo found that the corpses of men and women were criss-crossed, and each corpse displayed characters, numbers and patterns on the navel like a printer. Yang Momo observed the corpse forest one by one, carefully searching the navel of each corpse, looking at the characters, numbers and patterns, trying to find a way to identify them. However, Yang Momo was very dazed. Nor did he know what the characters, numbers, and patterns meant.

Momo, have you found the answer? Lu Xian'er asked in surprise.

No. Yang Momo shook her head helplessly.

Momo, detective, you see these corpses are fresh corpses, but they look like living people. It's like the living dead! Du Ruolan was puzzled and said: The corpse of the ancient Egyptian pharaoh found in the Egyptian pyramids is not like this.

Yes, what you said is not bad at all. Yang Momo replied fluently: According to the picture information, the body of the Egyptian pharaoh is shriveled and ugly. Scientists can only use modern scientific methods and skills to input pharaoh's body data into a computer, and then process it through the computer to copy and restore the appearance of the pharaoh during his lifetime. But these corpses were different, as if they were alive. Maybe their blood didn't dry up at all.

Wouldn't it be clear if we cut a corpse with a knife? Lu Xian'er said really.

You really are like a little kid. Yang Momo said teasingly: We haven't figured it out yet

Oops, detective! Du Ruolan suddenly exclaimed: Come and see, there are 2088. EUEFEO.#@*EUESEO.

Yang Momo looked at it carefully. Lu Xian'er exclaimed excitedly: Momo, isn't 2088 the current calendar of earthlings? Isn't EUEFEO a flying saucer that travels in the universe?

That's right! Lu Xian'er! You're so great! Du Ruolan praised from the bottom of her heart: UFO is the name of the earthlings for flying saucers, which means unidentified flying objects in the air. Then, EUESEO is USO, indicating the unidentified flying object of the ocean between heaven and earth. But #@*, what do these symbols mean?

Aren't these symbols just application symbols on computer keyboards? Lu Xian'er exclaimed: Could it be that the corpse forest was done by the people of the earth?

How is this possible? Yang Momo said: It is impossible for earthlings to have such superb skills. Keep looking and see what else you find?

So they walked through the forest of corpses. After careful inquiry, and then a comprehensive analysis, Yang Momo finally came to a conclusion that Du Ruolan and Lu Xian'er present were extremely impressed, that is, the characters, numbers, and patterns on each corpse had a common characteristic: digital. They are measured in centuries, e.g., 2088, 1988, 1888, 1788、...... 2008、1908、1808、1708…… In the end, Yang Momo found a set of even stranger numbers: 0, 1000, 10000, 100000...... The largest numbers are 4 million years, 5 million years, 6 million years, 7 million years, and 8 million years. There is an even stranger set: 1.6 million years, 1.7 million years, 1.8 million years, 1.9 million years...... Until 4 million years later. Yang Momo told Du Ruolan and Lu Xian'er about his discovery. Du Ruolan and Lu Xian'er were dumbfounded.