It turned out that the coordinates provided by Elizabeth were valid, and the search and rescue advance team really found a group of five people from the integrated investigation team near the coordinates. On their way back to the camp at the end of the day's investigation, they suddenly found that the satellite phone could not be contacted by the camp, and the compass was also out of order, so they could not find their way. They could only go in the opposite direction to the sun, and looked east for camp with reference to the flow of the river. After dark, the group was afraid of encountering wolves, so they had to find a cave halfway up the mountain to rest for a while.

After dawn, the experts of the comprehensive investigation team were shocked to find that the place where they had stayed last night was actually a large area of ancient cultivation caves dug halfway up the mountainside to the top of the mountain, densely covered with mountains. The sandstone part of the mountain is severely weathered, and every ravine and texture seems to carry an untelltale story of vicissitudes, and the black and dark cultivation cave entrance brings not only a visual impact but also a spiritual shock.

This is a strong testament to how early humans lived here. The five experts of the comprehensive investigation team decided not to rush back to the camp first, and that it was better to start the investigation on the spot anyway, because there were dry food and water available. Among the five experts, two geologists, one paleontologist, one geochemist, one anthropologist, plus the high-energy physicist Lee Guanghan who is on the way, form an all-round, multidisciplinary expedition group.

In the same Qinghai-Tibet Plateau, experts in different specialties see different appearances and connotations.

Geologists are seeing the impact force of the Indian Ocean plate drifting northward and crashing head-on into the Eurasian plate 70 million years ago. This impact force spreads into the distance like a wall of waves on the shore, and when the layers of monstrous waves stand still, the waves are no longer seawater but those undulating, majestic and tall mountains, snow-white mountain tops and huge glaciers like rolling waves. Under the movement of the earth's crust, seemingly hard rocks are bent or broken like plasticine. The exposed sandstone has been severely eroded by weathering, leaving behind the annual rings of time.

Paleontologists have seen fossils of ancient sea creatures on this highest plateau, witnessing that the ground under their feet was the bottom of the sea 70 million years ago. By the time the river reached 40,000 years ago, sparse broadleaf forests and forest-steppes grew in warm and humid climates.

Anthropologists have seen here signs of human activity about 30,000 to 40,000 years ago, with stone leaves with obvious Paleolithic features, stone knives, etc. There are also large-scale petroglyphs that can be found casually, and the picture is rich in content and the image is realistic.

Geochemists look at the uninhabited area, which was originally on the bottom of the sea, revealing the strange finger shape formed by the baptism of wind and rain on the surface of the earth, with layers as thin as a blade. He collected several bottles of sandstone samples to take back to test their chemistry.

Forgetting about the dangers of survival in the no-man's land and altitude sickness, the five experts worked from morning to dusk, and only then did they start to get anxious when they saw that they had not yet been connected to the camp. When the last rays of the setting sun shone on the desolate land, the search and rescue advance team miraculously appeared.

Li Guanghan and Lao Duan felt that they had heard the good news not long after they set off, and they were very happy, grateful and admired Elizabeth.

According to Lao Duan's command, they slowly drove the car up the large granite rock at a higher level, and set up their tent between the two large jeeps. Set up a cassette stove and start cooking instant noodles.

The night in the no-man's land is a great place for stargazing, the land is pitch black and there is no light pollution. The beautiful Milky Way is like a translucent ribbon across the sky, and the shining stars are dotted on the deep blue sky, like diamonds, pink, fiery red, blue purple, light blue, and golden yellow.

Chen Aili looked up and sighed: "Today I understand what it means to be 'brilliant like a galaxy', human beings are really small." ”

Li Guanghan subconsciously looked at the area behind Sirius, which shone with mysterious rhythm and light, and it was still there! This mysterious starlight that was once seen in the birch forest of Horngoumen and the island in the middle of the lake in the West Sea once again shines according to its inherent rhythm. Li Guanghan excitedly pulled everyone to look in that direction, it was useless to let him dance and talk about it, and the others still shook their heads blankly.

Chen Aili laughed at Li Guanghan and said: "Teacher Li, are you seeing the rhythm of the children's rhyme of 'twinkle and twinkle, the sky is full of little stars'?" You might as well teach us something easy and useful. ”

"Alright then, I'll start with the simplest." Li Guanghan pointed to the most recognizable Big Dipper and said: "It's summer, and the direction of the bucket handle is south, so you can see the North Star at a distance of 2 to 3 times the extension line along the edge of the spoon." The constellation Aquila, to which the Cowherd belongs, is located on the west side of the Milky Way, and the constellation Lyra, to which Vega belongs, is located on the eastern side of the Milky Way, and they both shine with a blue-white light. This is where the legendary Magpie Bridge meets, but the actual distance between them is 16 light-years. If you look at it again, the red star at the edge of the horizon is Antares, which is located in the heart of the dragon in the east of the twenty-eight constellations. That is, the heart of the scorpion of Scorpio in Western astrology. This is the similarity of the astronomical astronomy and astronomy of the East and the West in ancient times. Li Guanghan spoke the truth, and everyone could only hear the skin, and they were still confused when they looked at the stars in the sky.

"Looking at the starry sky, distinguishing the stars can only rely on your own pair of eyes to perceive, no matter how others point to it, they are blind, densely packed so much, who knows which one to point? I really admire how the ancients studied it with the naked eye alone. Lao Duan said it very pertinently, which resonated with everyone. Everyone dispersed and rested.

Li Guanghan asked everyone to sleep first, and then sit for a while, which was regarded as being on duty. The temperature plummets at night in the no-man's land, and the wild wind blows. Li Guanghan put on a police coat and sat on a folding chair, feeling the loneliness and desolation. All the possible and impossible things in reality and dreams that have happened in the past six months have passed through his heart like a movie screening. He vaguely felt like a robin, and in addition to the activity of photons, he could also feel the direction and strength of the geomagnetic field. Next, without Elizabeth's prompt, will he be able to find the answer with the experts of the comprehensive investigation team?

The next day, just after dawn, there was a roar from the valley in the distance, and as the sound of "bang-la-la" got closer and closer, everyone came out of the tent to see what was going on. A large wave of yellow turbulence mixed with mud instantly surrounded the large granite higher up, and the large granite stood like an island in the middle of the water. They did experience the unforeseen flash floods and glacial meltwater that are common during the rainy season.