There is no straight road from Xiazhou to Lanzhou, but the road is not bad. Ten days later, Li Yuanxing arrived in Lanzhou. But instead of entering the city, he went directly to the west. After walking for ten kilometers, he started to turn south, towards Hezhou.
go.
The Lanzhou garrison followed the team with two thousand soldiers and horses, and notified all Lanzhou's military forces to be on alert and ready to go to war at any time.
Hezhou is an important border town and a small branch point of the Silk Road.
But Hezhou is less than twenty miles away from Tuyuhun.
"Report, the flag of the King of Qin in the Tang Dynasty, the flag of the King of Qin in the Tang Dynasty!" A small school stumbled all the way into the tent of the general of the Tuguhun Dagushan garrison.
"What did you say?" Guardsman Da Gushan didn't understand.
"The Tang Dynasty, the King of Qin of the Tang Dynasty, the King of Qin has arrived in Hezhou." The person who reported the news was already a bit careless.
King Qin of the Tang Dynasty!
With or without troops, he alone can bring enough pressure to the surrounding states. One of the unpredictable tactics is that as long as the King of Qin of the Tang Dynasty is on the battlefield, the combat effectiveness of the soldiers of the Tang Dynasty will at least increase.
Double.
"Here comes, prepare a generous gift. Go to Doma City quickly to report to His Highness the Third Prince."
Taking a deep breath, General Dagushan tried to calm himself down. No matter what His Highness, King Qin of the Tang Dynasty, was doing here, Tuyuhun couldn't take it lightly. His status was too low. If he wanted to visit him, he had to go in person from the royal family, and send someone to see him off first.
Give a gift as a token of goodwill and see the reaction.
What is Li Yuanxing doing now?
He was standing in a wasteland in a daze holding a map.
Li Lanshan told Li Yuanxing that the location was between Liujiaxia and Bingling Temple. She also gave the detailed distance.
"The distance is of no use, why should we use a ruler to measure it here? The error once reaches here is only a few kilometers." Li Yuanxing cursed, and then looked at the longitude and latitude measuring instrument in his hand. Don't say that this thing is for military use.
Yes, even the ones used by gods won’t work. Without GPS, it’s impossible to automatically book a seat.
Li Yuanxing looked around and saw that the terrain would definitely change in more than a thousand years.
There seems to be little difference between these mountains and valleys.
"Li Yuanchang, take the abacus and a few people to prepare. Remember that Wulang taught you the calculation method of that function on the way. This is the time to use it!"
No one knows what Li Yuanxing wants to do.
The guards were all lined up in a circle to guard Cui Yingying and others in a shed a few hundred meters away. In the shed nearby, Li Yuanchang and a few people with good arithmetic skills had already set up a posture and prepared.
Li Yuanxing first placed a disk on the ground, which was carefully made before departure. The disk was spliced together and reached a diameter of eight meters. The scale used on it was also calculated in centimeters in later generations.
Several craftsmen used hanging ropes to build pillars on the ground, and then adjusted the level of the disk.
Finally, a pillar was erected on the disk using the same principle of hanging ropes.
Without GPS, Li Yuanxing had to use manual methods to calculate latitude and longitude. The error of ten kilometers was terrible. But if it could be within one thousand meters, or within one hundred meters, Li Yuanxing would definitely feel at ease.
The craftsmen were not slow and finally finished before noon.
Li Yuanxing never left the round plate. He ate two meat buns for lunch and drank a few sips of tea.
"Report, the length of the rod is the same as the length of the shadow!" someone standing on the disc to watch the scale shouted. Li Yuanchang and several of his mathematicians immediately became nervous, and their movements were almost the same. Everyone moved the abacus.
Put it in front of you, open the white paper, and then take a hard pen. Then open the correction value table given by Li Yuanxing and press it with an iron bar, waiting for the next value to appear.
Next to it lies an ancient sundial used for timekeeping.
Li Yuanxing stared at the benchmark and entered the value on the theodolite in his hand.
The person reporting the count quickly cleared the stopwatch given to him by Li Yuanxing and started timing.
Exactly half an hour later, the count was counted again: "Report, the shadow is long..."
Li Yuanxing used the time and location of later generations. However, he also played a little trick. The Tang Dynasty used the center of the new palace in Chang'an City as the origin of longitude. It is very, very easy to convert the two.
, just need to add a small program to the computer of later generations to complete.
The longitude and latitude of later generations calculated by Li Yuanxing.
Li Yuanchang and others calculated the longitude and latitude of the Tang Dynasty.
Take Chang'an zero point as zero degree.
After three measurements, the machine Li Yuanxing held roughly calculated the longitude and latitude of Li Yuanxing's current location. But there were also errors.
Li Yuanxing pointed in a direction with the electronic compass on the machine, and Li Yuanxing drew a straight line on the ground.
"Come here, measure out twelve miles and three hundred steps for me." Li Yuanxing ordered.
Li Yuanchang said at this time: "Based on the direction pointed by Si Nan, Fifth Brother's direction is good. It just should be longer, thirteen miles and six hundred steps!"
Li Yuanchang was so nervous that he was sweating all over when he was calculating.
After checking the data with several other people, he determined a distance, which was at least very close to the position Li Yuanxing made. As for Li Yuanxing just standing and not using an abacus, he was not surprised. The fifth brother is the Star Lord, and even
If you don't have this ability, you won't be Xingjun.
But Li Yuanchang is young after all.
He wanted to prove that he was talented and good enough, so he proposed to go one mile further.
Li Yuanxing smiled and nodded: "According to what Qilang said, we will build a new platform there and test again at noon tomorrow."
"Yes!" Li Yuanchang was very excited.
Li Yuanxing went back to his tent to rest. Kinderman came to Li Yuanchang and said, "Fortunately, you are the royal King of Han. Did you just doubt His Highness King Qin's calculations? Or do you think you are smarter than His Highness King Qin? What happened today?
But I understand better, His Highness the King of Qin is just teaching you how to calculate."
Li Yuanchang was also shocked. He understood what Kinderman meant. He was trying to stand out in front of the King of Qin. This was disrespectful.
However, after thinking about it, Li Yuanchang was not afraid: "Fifth brother is kind and will not care about such a trivial matter!"
"Do you know what this calculation is for?" Kinderman asked again.
"This calculation? The fifth brother gave a numerical value and a method of calculation. Did you mean to find this place?" Li Yuanchang has never been involved in politics. What he knows best is calligraphy and painting.
Kinderman smiled calmly: "If more people in the Tang Dynasty were proficient in this kind of calculation, the military maps of the Tang Dynasty would be accurate to within ten steps. You will know the convenience of generals in fighting just by asking those generals.
."
After Li Yuanchang heard this, he ran to Lu Maofeng.
When asked, Lu Maofeng said: "This measurement is very troublesome. But if you don't consider the accuracy, just set up a pole and use a rope to measure the length. The field march route is feasible without a guide, but the gathering of several troops is
It can be graded as accurate.”
Lu Maofeng said in his heart that His Highness King Qin was looking for a location within ten steps.
If you can fight with an army, it is already extremely accurate within ten miles.
The next day, it was still the same, measuring the position on the disk. Li Yuanxing didn't know that Li Yuanchang had made a mistake, because there must be some errors due to the changes in longitude and latitude between modern times and the Tang Dynasty. It was only a few hundred meters, which already made Li Yuanxing very happy
In the future, Li Yuanchang may be the first director of the Map Bureau of Datang.
Another few hours of busy work. Only this time, Li Yuanxing was more interested in watching, while Li Yuanchang led the people who mainly did the work.
Li Yuanxing looked at the machine in his hand, and then at Li Yuanchang who was gesturing at the angle to Simon.
"Fifth brother, go southeast for another five miles and two hundred steps. We should be almost at the location mentioned by fifth brother. Our calculations are correct, but the angle of Sinan seems to be inaccurate. It's a pity that none of them can be accurate to a thousand.
One-third. This one is just a hair away, and ten miles away it’s half a mile away!”
Li Yuanxing was very satisfied with Li Yuanchang's statement.
Originally, Li Yuanxing thought that it would take him ten days and a half to find the location, but now he underestimated the power of the sergeants of the Tang Dynasty. By digging mountains and paving roads, there was no place that Li Yuanxing could not reach. But Li Yuanxing's gorgeous carriage remained in Hezhou City.
The car is too big to enter the mountains or valleys.
On the third day, Li Yuanchang and others continued to calculate.
Yan Shigu then asked: "Your Highness, what are you looking for?"
"Looking for bones!" Li Yuanxing turned around with a smile, and Yan Shigu shook his head: "I don't believe it, His Highness mobilized an army. And this place is only a few dozen miles away from Tuyuhun. Your Highness must really look for bones when you come here. What kind of bones can you use?"
Is it worthy for His Highness to come here in person?"
"Just wait and see, you will understand when the time comes." Li Yuanxing still did not say clearly because he didn't know if he could dig it out.
Cui Yingying was also curious and asked, but Li Yuanxing refused to say anything.
"Fifth brother, eight hundred meters to the east is the position mentioned by fifth brother." Li Yuanchang ran over excitedly. Li Yuanxing looked at the instrument in his hand and found that the calculated positions were almost the same. It can be said that the error was within one kilometer.
.
Li Yuanxing took a deep breath: "Lu Maofeng, pass the order."
"Here!" Lu Maofeng shouted, and everyone around him, whether they were generals, captains, sergeants, or craftsmen and servants, straightened their bodies. After running so far, they didn't know what His Highness King Qin was going to do. Finally, they waited until His Highness King Qin
How could this not be exciting?
"The cavalry guards the outer perimeter, and no one within thirty miles is allowed to approach. The Yulin Guards guard the inner circle, and any intruders will be killed. All combat soldiers and auxiliary soldiers, except for necessary food and medical care, take off their armor and start digging.
No one is allowed to use detonators without my permission, and all work must be done by hand. Once you see bones or anything similar to bones, you must report it to me immediately, and remember not to damage any bones!"
Bones, dig bones? What kind of bones?
Everyone was stunned. They had traveled thousands of miles and spent so much effort to dig out bones.
It can be said that if Li Yuanxing had not personally ordered it, I am afraid that an officer would have come to ask the reason. (To be continued. Please search Piao Tian Literature, the novel will be better and updated faster!)