The first batch of twelve telescopes was given by Li Zhi to senior officers such as Zheng Kaicheng, and the others were given to the scouts and artillerymen of the Selection Regiment.
On April 7, the first mass-cast eighteen-pound cannon was installed on the fort in the north of the city. It was pulled up by an eight-horse artillery cart. The fort was located behind the city wall, two meters higher than the city wall, and was cylindrical.
of piers.
Li Zhi handed a telescope to the gunner who was responsible for correcting the artillery's landing point, and asked him to test using the telescope to correct the angle of the artillery.
The gunner held the telescope and looked at it for a long time, with a look of excitement on his face, as if he had discovered a new world.
After the gunner familiarized himself with the telescope, the test firing began. The artillerymen operated the artillery, measured the elevation angle and the amount of gunpowder with musket gauges, musket rulers and calipers, and fired at a large circle drawn with lime four miles away.
The effective range of a standard long gun is three miles, which means that it can achieve effective shooting effects on specific targets within 1,500 meters. The ballistic trajectory is basically a straight line. Using a standard long gun to hit a target four miles away is a projectile shot, and the shelling effect and accuracy will be different.
Descending. But if the target is big enough, you can still hit it by adjusting the angle.
The artillery roared, and the shells were violently sprayed out in the tongue of flames. The cannon body was deflected, and the shells shot into the distance at a speed invisible to the naked eye.
Four miles away, the impact point of the artillery could not be clearly seen with the naked eye, and it was not even clear whether the shells landed in the circle. But Li Zhi looked with a telescope and saw clearly that the shells landed two feet to the left of the large lime circle.
Ten meters away, he crashed into a patch of reed grass. Li Zhi took off his binoculars and heard the gunner shout loudly: "Eighteen steps to the left!"
The gunners went up and dragged the gun mount and relocated the gun in the middle of the fort. According to the gunner's observation, the gunners used the angle to readjust the muzzle angle and fired again.
The artillery fired again, and amid the roar, the shells drew an arc in the air and flew towards the white circle four miles away. Finally, the shells smashed into the large lime circle with a diameter of 30 meters, creating a piece of dirt.
, and bounced forward.
The gunner shouted excitedly: "Hit the target!"
The gunners jumped up and high-fived each other. Being able to hit the target four miles away still made the gunners very proud.
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The demand for reading glasses is still slowly growing. People who bought glasses used them in front of others, which gradually attracted more buyers.
Xie Jindao stood in front of Li's optical shop, hesitant.
Xie Jindao is a student member, also known as a scholar. He took the exam for many years and passed the exam when he was 28 years old. At that time, his parents were still there and the family raised him as a scholar. But scholars are not valuable these days, so he was in vain
He became a scholar and worked hard all his life. Now he has sent away his deceased parents and makes a living by teaching at the Wang Family School. After a year of busy work, the students gave him no more than twenty taels for repair.
Although more than twenty taels should have been enough for him, Xie Jindao was fond of drinking and was addicted to alcohol. Every time he had a few dollars on hand, he would buy alcohol to live on, so he could not save much money throughout the year.
That is to say, Xie Jindao is greedy for drinking and drinking. At the age of forty-eight, Xie Jindao still has no wife and is still single.
In the past few years, Xie Jindao has felt that his health has become worse and worse. First of all, his legs and feet have become inflexible. He used to have no trouble walking on the twenty-mile mountain road, but now he can't walk on the ten-mile flat road from Wangjiazhuang to Acropolis.
I had to rest twice on the way. Then my hands started to shake. I don’t know why, they were shaking so much that they kept shaking unless I put them on something.
Could it be that he drank too much?
But these are all trivial matters. The most troublesome thing is that his glasses are starting to get old.
As a scholar, having presbyopic glasses is really a big problem. I can’t read clearly, I can’t write well, and the worst thing is that I can’t teach properly.
If you look closely, you will see that at least three of the ten words need to be guessed and combined with the context to guess what the student wrote. How can this be done? If this continues, Xie Jindao will be fired by the head of the Wang family.
Without the work of this scholar, Xie Jindao would starve to death. He was a great scholar, but he did not want to starve to death in Tianjin in his forties.
Xie Jindao met the accountant of the Wang family a few days ago. He saw the accountant wearing two pieces of glass on his nose and doing accounts there. Xie Jindao asked him, "Don't you have presbyopic glasses?" The accountant pointed at his nose proudly.
The piece of glass on said:
"Just these two pieces of glass, ten taels of silver!"
Xie Jindao didn't understand at the time and asked: "What is so expensive!"
The accountant said: "These are called glasses. They are specially designed to treat presbyopia. I bought them for ten taels of silver. If you put them on, you can read clearly."
Only then did Xie Jindao know that there is such a thing in the world that can cure presbyopia. He tried the accountant's glasses, but it had no effect. The accountant said that everyone's glasses are different and he has to go to the store to get them. Xie Jindao
I don’t doubt the effectiveness of these glasses. After all, they cost ten taels of silver. How can I earn so much money if they are not effective? He and the accountant asked about the location of Li’s store and walked here.
But when he got here, he was a little reluctant to part with it. Ten taels of silver was enough to buy five jars of Jinhua wine - he had been reluctant to drink Jinhua sweet wine in the past few years. In recent years, the gifts given by his students were very poor, and he also couldn't bear to drink them.
Just buy some Tianjin local wine and live your life.
But if this presbyopia is not cured, let alone drinking, I will not be able to eat.
Xie Jindao sighed and walked into Li's optical shop with ten taels of silver in his pocket.
There were several people in the store, and besides himself, there were two customers who were auditioning. As soon as Xie Jindao entered the store, a boy came up to him and said with a smile: "Sir, what's your surname? Are you here to treat presbyopia?"
Xie Jindao straightened his clothes and said, "My surname is Xie, and I am a student."
The boy suddenly realized it and immediately said with great respect: "It turns out to be Mr. Xie. How many years has Mr. Xie been presbyopic?"
Xie Jindao was still aching for ten taels of silver, and said angrily: "It's been two years, I'm so presbyopic that I can't read the student's articles clearly."
The boy said wait a moment, then went to the back and took out a box of glasses, took out a pair and put it on Xie Jindao, and said, "Ms. Xie, what do you think of these two Baidu glasses?"
As soon as he put on the glasses, Xie Jindao squinted at the "Spring and Autumn" on the table, flipped through it, and found that he could clearly read the words on it. Xie Jindao helplessly narrowed his eyes, secretly thinking that these ten taels of silver were definitely
It’s time to spend it!
Five jars of Jinhua sweet wine were gone in an instant.
Xie Jindao said in a rough voice: "See clearly!"
But the boy didn't let Xie Jindao go, and handed over another pair of glasses to replace the one on Xie Jindao's nose, and said, "Ms. Xie, try these 225-degree glasses again!"
Xie Jindao flipped through the "Spring and Autumn" book again, and said blankly: "It's clearer!"
The boy got another 250-degree pair for Xie Jindao, put it on and tried the effect, and found that it was not as good as the 225-degree one.
The boy then said: "That's the one with 225 degrees!"
Xie Jindao was not surprised by the effect of these glasses. The thing sold for ten taels of silver must have such an effect, otherwise he could earn so much money? He actually felt sorry for the ten taels of silver again. Xie Jindao looked at it and sat inside
The shopkeeper of the optical shop saw him looking at her expectantly and couldn't help but snorted - these profit-seeking businessmen are really cannibalistic, two pieces of glass cost ten taels of silver!
Xie Jindao slapped the ten taels of silver on the table and said coldly: "The silver is here, please keep it!"
The boy walked in with the silver, weighed it on a scale, and then said with a smile: "Thank you, Mr. Xie, we have a box for you, please wait."
The boy walked in and took out a rectangular box, handed it to Xie Jindao, and said, "This is a box specially designed to store glasses. Mr. Xie, please take it!"
Xie Jindao breathed a sigh of relief when he thought that now that he had cured his presbyopia and that the job of the clan scholar had been saved. However, when he thought of spending a full ten taels of silver, which was enough money for five jars of Jinhua wine, Xie Jindao couldn't help but feel heavy.
snorted.
Profit-seeking merchants! Don’t understand the teachings of saints!
Taking the glasses case with a wave of his hand, Xie Jindao walked away wearing his glasses.
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Thanks to the poor fat man for the 500 reward, thank you!
