Yan Xuan returned to school in the afternoon to prepare for tomorrow's survey.
At around 7 o'clock in the morning, Su Di's commander stopped at the downstairs of the laboratory building of Petroleum University. After packing up, the two planned to arrive at the foot of the building before 3 o'clock in the afternoon.
Mid-August was the hottest time of the year. The two of them didn't want to take a break. They took turns driving without stopping. Except for filling up the tank once and going to the toilet, the two of them never got out of the car. On the one hand, it was really practical.
Too hot; the other side is also the most important aspect. The two are eager to solve this long-standing mystery.
Ju County, southeastern Shandong, is the place where Dongyi Chiyou emerged. Xia belongs to the Ju tribe, and Shang is the Gumu Kingdom. In the Zhou Dynasty, Juzi was entrusted here and established the Ju Kingdom, which contended with Lu, Qi, Yue, etc. for hundreds of years.
Although the country is small, it has saved Qi from danger twice, resisted the barbarians thousands of miles away, and allied with Duke Lu under the ancient ginkgo tree!
Although dynasties changed after the Han Dynasty, Ju has remained as a place name to this day. The Ju culture has survived as a culture that has traveled through five thousand years. Together with the Qi and Lu cultures, it is known as the three major cultures in Shandong. Tao Wen, who is haunted by Yi Xun and Su Di, will
The Lingyang river bed at this site was excavated.
At one o'clock in the afternoon, the commander was already driving on Ginkgo Avenue in the urban area of ​​Juxian County, passing through the city from west to east. There had just been a thunderstorm at noon, and the air was still filled with the smell of earth. The falling cumulonimbus clouds were mixed with dull thunder, and they were moving towards the southern sky.
Retreat, but the sky in the north is dazzlingly blue!
In front of the field of vision is the housing estates that are close in front of you but out of reach. Walking through the city, row upon row of reinforced concrete buildings sandwich the thin housing estates in the middle, and also erase most of the skyline to the east. Commander
As we approach the west bank of the Shu River, our view suddenly opens up. Houses and the surrounding low hills form a welcoming array, directly in front of us. The mountain ridges are clearly visible, and even the trees in the mountains seem to be visible. Black strips are scattered here and there.
It is light brown rock.
"Su Di, are you tired? How about we take a rest on the river embankment avenue."
"Okay, that's what I mean too."
"Are you scared? The mountain is right in front of you, and I suddenly don't want to do anything, for fear that our efforts will be in vain, and even more afraid that this is a trap." Su Di stared at the house, with a little regret in his eyes.
"I'm afraid too! It's a good thing that I won't get anything. I'm just afraid that something bad will happen."
The words were a bit heavy, and the two of them were silent for a moment.
"This scenery is really nice. The ancients didn't lie to us. Look at this water and mountains. You should have fun in time. Fun is not just about eating, drinking, whoring, gambling, and smoking. The spiritual satisfaction is more important. Our confusion,
It's fun to be freed. So don't twitch at the last moment. How about we sleep in the car for a while and relax?" Su Di turned around quickly enough to be able to excuse himself. This is often a leader.
The quality that should be possessed.
"You go to sleep, I'll just recuperate. But the engine is just running like this?"
"Hey, the air conditioner won't work if you don't turn it on. It doesn't cost you any money, so you're being hypocritical. Wake me up in half an hour."
I don’t know if Su Di was really forgiving or just pretending to ease his mood. He lowered the driver’s seat and fell asleep. Yan Xuan also lowered the passenger seat. As soon as he closed his eyes, he remembered that he was in Juxian No. 4 Middle School.
When I was studying, I stared at the scene of Wulougu from the east window of the dormitory corridor countless times. I remembered riding a motorcycle with my father to Wulougu. Now my parents live in the countryside not far to the south. I don’t know what the two elders are doing now, maybe...
Just look at this mountain.
I remembered that during the first college entrance examination, I made an appointment with my confidante Juezi to go on a trip together after the college entrance examination. Unexpectedly, Juezi was admitted to a certain 211 college, but Yan Xuan couldn't even see Sun Shan. He was too embarrassed to be human and broke the appointment.
Now that Juzi has become a child and a mother, I don’t know if she is happy or if she is still willing to meet up and travel around the house together...
"Hey, Dr. Li, aren't you going to sleep? Don't you still have the sacred mission to wake me up? Why are you still asleep?" Who knows if Su Di fell asleep just now, but the time was very accurate, just half a day ago
Hour.
"As long as you wake up, let's go." Yan Xun had no unnecessary words.
"Okay, just watch it!" Su Di started teasing.
In less than ten minutes, they arrived at the foot of the mountain on the west side of Wulougu.
When viewing Wulou Gu from the west, nothing special can be seen. Because the altitude is only more than 450 meters and the platform on the west side is higher, one cannot appreciate the majesty of the mountain. It seems that viewing Wu Lou Gu from the west is suitable for distant views.
It was around 3 o'clock in the afternoon, and the earth was still being scorched by the sun. Yan Xuan and Su Di had no intention of avoiding this hour, but wanted to enjoy it.
The two of them flew the drone to find the best equipment placement point.
"The entire mountain runs north-south and is long from north to south. There are villages on the north side to prevent onlookers. They are placed on a platform halfway up the mountain. On the south side is the cemetery. The equipment can be placed on the road leading to the cemetery. On the west side, it is placed
At the parking position, place the receiving equipment on the east side. When arranging, pay attention to the recording height. We arrange the north side first, then the west, south, and the east side to receive sound waves. We can detect the subtle changes produced when sound waves pass through different media.
Determine whether the mountain is hollow."
"Dr. Li, Su Di obeys your order. I will carry the equipment and go to the mountainside platform on the north side first."
After about an hour, the wave transmitting equipment on the north, west and south sides had been installed. The two of them drove to the east side. From the east side, there was indeed a formation in the house building. It can be said that there are thousands of cliffs standing on it, and the cliffs are covered with strange rocks and strange pines. It is magnificent.
, magnificent!
After the installation of the receiving equipment was completed, Yan Xuan turned on the sound wave transmission remotely. The equipment showed that data was being received...
After the detection equipment receives the acoustic signal, it requires more than 10 minutes of processing time. Yan Xuan is responsible for graphically analyzing the data to intuitively reflect the structure of Wulou Gushan.
After the data collection was completed, Yan Xuan took out the memory and connected it to the laptop.
"Su Di, I'll get in the car to analyze the data, and you pack up the equipment."
"No problem, you can do your work in the car, and leave the instruments for the four directions of east, west, north and south to me."
The commander walked around the house again. Yan Xun devoted himself to data processing, while Su Di went up and down, back and forth, to store all the previously arranged equipment. When he returned to the cab, he found that
Xuan was still staring at the screen with a nervous expression. As a layman, Su Di didn't dare to interrupt, but just sat quietly, waiting for the results.
"I repeated the analysis several times, and I couldn't understand a set of data. It couldn't be matched with any known material. First of all, I can definitely say that the mountain is not hollow, but there is a material in the middle of the mountain. When the 900MHz wave passes through, the speed is abnormal.
Low, so low that there is no match with any previous record, and there is no reflection, Hilbert calculation, etc. are invalid." Dr. Yi Xun pushed the notebook in front of Su Di.
"Our guess is right!" Su Di looked stunned.
"To be exact, we are only half right. The abnormal area is also solid, but the material composition is different from the rock."
"This is ridiculous. Can you deduce the shape of the abnormal area?"
Chapter completed!