Han Jinxin looked at the long "astronomical telescope" placed on the city wall and marveled.
The Duke of Jin sent this kind of telescope to Han Jinxin and asked Han Jinxin to use it to monitor ten important people in Shandong on the city wall. Han Jinxin tried this telescope and found that this kind of telescope is really amazing. If the naked eye can see clearly up to 30 meters,
If the faces outside are difficult to see clearly no matter how far away they are, this telescope can help observers clearly see faces three thousand meters away.
The telescope has a diameter of two inches and looks like a fire stick.
According to Mr. Jin, the magnification of this telescope is one hundred times. Compared with the original binoculars with a magnification of twenty-five times, the magnification of this "astronomical telescope" has been qualitatively improved.
In fact, the principle of this kind of telescope is very simple, it is a Keplerian telescope. It uses two convex lenses as the objective lens and eyepiece respectively, which doubles the magnification factor. There is also a total reflection prism in the telescope to make the inverted image
Become a true image.
Of course, this kind of telescope has the problem of chromatic aberration. To correct the chromatic aberration, a lens with a different refractive index needs to be added.
The grinding of this lens took a lot of time in the telescope workshop, and it was not until a year ago that it was successfully tackled. However, once the first piece was ground, the subsequent production was carried out in batches. This year, the telescope workshop made 300
Many "astronomical telescopes" come in handy now.
Han Jinxin looked through the telescope at the Shandong Governor's Yamen in the distance again, and found that he could clearly see the contemptuous expressions of the two Yamen officials at the door of the Yamen. The two Yamen officials were two miles away from the city wall where Han Jinxin was located. With the naked eye,
You can only see two points, but you can distinguish the smallest hair with a telescope.
Han Jinxin felt that he was admiring Jin Guogong more and more. How could Jin Guogong invent so many new things? Every one of them was extremely practical. Even compared with the ingenious Luban, Jin Guogong might as well give in.
These exquisite inventions made Han Jinxin believe that the future of Jin Guogong was far beyond his current status. Han Jinxin didn't know what Jin Guogong would become in the end, whether he would become a county king? a prince? But Han Jinxin believed that as Jin Guogong
As the Duke of Jin becomes bigger, more and more people will be benefited by the Duke of Jin.
Li Zhi always thought about the people and benefited everyone. Every new thing Li Zhi brought out, the people would benefit in the end. This is why Han Jinxin was very loyal to work for Li Zhi.
Han Jinxin found a hundred discerning secret guards and arranged them on the Jinan city wall to use telescopes. The Jinan city wall itself is more than ten meters high. If the telescope is placed on the city wall facing a certain street, the entire city can be seen.
All the people on the street.
Of course, in order to further reduce the attention of those under surveillance, Han Jinxin built many small wooden sheds on the city wall, and the telescopes were hidden and operated in the small wooden sheds.
Nowadays, the city walls of the six prefectures in Shandong are all under the control of Li Zhi. Li Zhi placed some small wooden sheds on the city walls, but no one paid attention. Even if the organizer of Li Zhi's assassination was more guilty and alert, he would not have thought that there are people in the world.
A telescope with a magnification of 100 times would not have imagined that the wooden shed on the city wall could monitor the entire city.
In this way, there will be no chance of alerting the enemy.
The three people who need to be tracked in Jinan City are the King of De, the Governor of Shandong and the Magistrate of Jinan.
Han Jinxin asked the watchers who were following the three families to focus on the main entrance, side entrance and back entrance of the three families. They clearly saw all the people coming in and out of the three families' mansions, as well as the servants and servants, and wrote down the physical appearance of these people. Then he left a few notes.
One watchman continued to watch the gates of the three families, while the other watchmen were dispersed to watch other main streets in the city to monitor the activities of the three families in the city.
If any of these three families leave the city, a lookout will immediately stand on the tower and scout out from the twenty-meter-high tower. Basically, no activity within a ten-mile radius can escape the surveillance of the lookout.
The walls of the other five prefectures outside Jinan are also arranged in this way. For each target, Li Zhi is equipped with thirty secret guards to monitor, striving to grasp every move of these civil servants and nobles.
For a period of time, the watchman who was following the target did not fully know all the servants and servants of the target, and could not fully grasp the target's activities inside and outside the city. However, Han Jinxin adopted a rotation method, allowing each lookout to observe the target for several days.
After a month, the lookout was completely familiar with the target.
As soon as the servants, servants or the civil servants themselves left the mansion, their behavior was thoroughly monitored. The watchmen on the city walls monitored them from all angles, and basically did not miss anything in the city.
From then on, every move of the governor of Shandong, the prefects of various prefectures, and the three vassal kings was closely monitored. However, there was not a single follower on the ground, and there was not a single hidden sentry that could attract attention. These ten people were completely unaware that they were being watched.
Soon, the suspicious behavior of ten civil servants and nobles was discovered one after another.
On May 15th, Li Zhi was processing official documents in the third hall of the Tianjin Duke's Mansion, when he saw his bodyguard saying that the emperor had sent someone.
Not long after, a eunuch came in with two young eunuchs.
"Duke Jin, Your Majesty sent Dongchang to do his best this month to check the Rumi gun that leaked out of the capital camp, and the results have been obtained. The emperor asked me to send the list to Duke Tian."
Li Zhi nodded and said, "Thank you, father-in-law."
Li Zhi took the list and saw that it listed sixteen Rumi guns that had been missed in the past three years. The time, place and reason for the missing were listed aside.
However, the Rumi gunsmith who left the capital camp was not on the list.
The father-in-law seemed quite proud of the list and asked with a smile: "My lord, Dongchang has worked hard this month. Next, we will conduct a detailed investigation of the whereabouts of these Rumi guns. Maybe we can follow the clues to find out who committed the assassination."
organizer."
Li Zhi pursed his lips and said: "Eunuch, according to my investigation, the Rumi gun used to assassinate me was not made at the craftsman's office in Beijing. It was made by craftsmen who left Beijing six years ago."
When the eunuch heard this, he was stunned and suddenly felt embarrassed. If Li Zhi was right, Dongchang's busy month was in vain.
The eunuch's face turned red and he said: "However, according to the rules of the capital camp, once a craftsman enters the craftsman's office of the capital camp, he is not allowed to leave. What the Duke said seems impossible. Unless...unless
The craftsman is dead, otherwise he would have to work at the craftsman's office every day."
Li Zhi smiled and put the list gently on the table. He didn't expect Dongchang to find out the truth, so it was expected to get this nonsensical list.
During the Chongzhen period, Jinyiwei and Dongchang were in name only. In the original history, there was even a situation where Zhou Yanru, the first assistant, went out to supervise the division and was defeated, but reported a victory. Even for such a ridiculous thing, Zhu Youjian was unaware of the inside story and still ignored it.
Zhou Yanru received many praises and awards, and was specially appointed as the Grand Master. It can be seen that the intelligence agency never reported matters outside the palace to the emperor in a timely manner.
