In dreams, time is a vague concept.

In a dream, it is always difficult for the dreamer to understand where the dream begins and how it ends

Dreams are uncertain, and they come and go without a trace.

By the time Yuan Haochen came back to his senses and returned to the ruins, the night had already left, and the dawn had gradually spread.

"Hao Chen, Hao Chen, I haven't seen you since I woke up, have you stayed here all night" Lin Feng's voice came from a distance.

"En~, I, I just want to see if there are any new clues." Yuan Haochen didn't know how to explain, so he was speechless for a while.

"Don't fight like that. So, did you find anything? Lin Feng asked with a look of astonishment.

Yuan Haochen pondered for a while and said, "There should be an important discovery, but my thinking is a little messy now, let me sort it out first." ”

"Okay, let's go have breakfast, the army's rations are great, and the canned ham is super delicious."

The two talked and laughed, and then returned to the campsite not far away

In the camp, the soldiers of the army were singing military songs loudly, and Yuan Haochen and others were infected by this atmosphere and also sang along.

After a hearty "howl", everyone really became energetic.

"Comrades, the plan of the day lies in the morning, let's continue to fight!" Wang Wei shouted slogans in a loud voice.

And so began a busy day.

Yuan Haochen sat on a sand dune not far from the ancient pagoda, looking intently at the pagoda, and last night's dream was playing out in his mind over and over again.

Ban Chao, Princess Hanyue, King Loulan, and the dream of the underground stone chamber of the ancient city of Niya are obviously related to last night's dream.

If these two dreams are true, then can we find out some clues about the [Flying Stones from the Sky] from the dreams? "Classmate Hao Chen, why are you absent-minded. I didn't rest yesterday, but you should pay attention to your body, or you should take a rest in the morning. Director Zhang walked all the way, looked at Yuan Haochen, who was standing on the sand, and asked with concern.

"Director Zhang, there is no problem with my physical condition, I was just thinking about some things about [Flying Stones from the Sky] just now." Yuan Haochen came back to his senses and replied.

"Oh, that's good. Lin Feng and I have also been searching for the pagoda, hoping to find clues to locate the square. Director Zhang continued, "Unfortunately, the pagoda is too old, and it is difficult to find any valuable clues in the remaining parts now, and we have not gained anything from yesterday's busy work to now." ”

"That's right, you can locate it according to the approximate coordinates between the stupa, the moon and the constellations in the dream," Yuan Haochen seemed to suddenly grasp the inspiration from Director Zhang's words.

"Hao Chen, are you" Director Zhang was about to ask, and when he saw Yuan Hao Chen's concentrated thinking, he waited quietly on the side, for fear of disturbing him.

With his amazing memory, Yuan Haochen quickly conjured up the scene of the pagoda, the bright moon and the starry sky in his dream.

"By the way, I was standing at a 45° angle at the entrance of the staircase of the stupa and looking up at the starry sky, and I saw the brightest star in the constellation of Gemini, Beihe San, and the square was about 500 meters behind it." Since Yuan Haochen was already familiar with the 88 constellations of the whole day accurately divided by the International Astronomical Union, he quickly made a precise positioning.

"Director Zhang, I may have some clues." Yuan Haochen said excitedly, "Although I am not very sure yet, I want to try it." ”

"Great, any clues now make more sense than our blind search." Director Zhang also affirmed with excitement.

"From last night's observations, I would like to try to locate the target square by the coordinate position between the stupa and the constellation. I'll have to argue a little bit more about the specific method. Yuan was also unsure whether the dream was real or believable, so he decided not to mention the details of the dream to others for the time being.

"Okay, you go and get ready first." Director Zhang nodded and said

That night, everyone stopped their search work and gathered around the pagoda one by one, assisting Yuan Haochen to find the location of the square through the constellations.

In the night sky, the position of the constellations is not fixed.

Due to the rotation of the Earth, the starry sky background rotates once a day around the celestial axis. At the same time, the starry sky changes slowly with the seasons, and each year is a change cycle.

Constellations have long been used by sailors and travelers as an important sign to identify directions.

The identification of constellations is often the identification of bright stars.

For example, in the Northern Hemisphere, Polaris in the constellation Ursa Minor is the most important basis for orienting the starry sky.

Once Polaris and any other stars are identified, the entire sky can be identified by the relative positions of the stars.

Yuan Haochen quickly found the location of the brightest star in the constellation Gemini in the canopy, Beihe San.

Through the relevant records of Ban Chao Envoy Loulan in historical materials, we can determine the influence of the seasons on the position of the constellation.

Combined with the description of the wall text and the dialogue in the dream, it can be determined that the time to observe the starry sky in the dream is between 11 and 12 o'clock in the evening.

Considering all the above factors, Yuan Haochen quickly determined the approximate location of the square.

"The square is here, and there may be an error distance of about 50 meters in the east, west, north, south and north directions." Hara Haochen made a range judgment based on the position where he was standing. "A few of you, immediately surround this area with a cordon and make identification signs." Company Commander Wang gave an order.

After discussion, it was decided that the area would be searched overnight without waiting for dawn.

The scope demarcated by Yuan Haochen is not large, and the scientific expedition team of more than 20 people can quickly turn it upside down.

Sure enough, in less than 10 minutes of searching, everyone dug up a lot of stones for paving under the buried sand.

"Hao Chen, you are really amazing, tell me how you did it, haha." With the determination of the location of the square, everyone was amazed.

"If I tell me the clue I got in my dream yesterday, would you believe it?" Yuan Haochen smiled helplessly.

"Believe it, I believe everything you say now, haha." Lu Qinglian said with a smile.

"Come on, everyone, [Flying Stones] are calling us under the square, my big shovel is already hungry and thirsty." At this moment, Lin Feng was full of vitality.

"Found, found, the entrance is here"

With the shouts of a young warrior, the crowd rushed towards the entrance.