The first batch of twelve telescopes was equipped by Li Zhi to Zheng Kaicheng and other high-ranking officers, and the others were given to the scouts and artillery of the Xuanfeng Regiment. Pen, fun, pavilion www. biquge。 info

On April 7, the first mass-cast eighteen-pounder cannon was mounted on the battery north of the city, and was pulled up by an eight-horse gun carriage. The fort is located behind the city wall and is two meters higher than the city wall, and is a cylindrical pier.

Li Zhi handed over a telescope to the gun commander who was in charge of correcting the landing point of the artillery, and asked him to experiment with using the telescope to correct the angle of the artillery.

The artillery commander grabbed the telescope and looked at it for a long time, with an excited face, as if he had discovered a new continent.

After the commander of the gun familiarized himself with the telescope, the test firing began. The gunners operated the guns, measuring the elevation angles and the amount of gunpowder with gauges, rulers, and moments, and fired at a large circle of lime drawings four miles away.

The effective firing range of the standard long gun is three miles, which means that it can achieve effective shooting effect on specific targets within 1,500 meters, and the trajectory is basically a straight line. If a standard long cannon hits a target four miles away, the effectiveness and accuracy of the shelling will be reduced. But if the target is big enough, you can still hit it by adjusting the angle.

The artillery roared, and shells erupted violently in the tongue of fire. The cannon body fell, and the shell fired into the distance at a speed invisible to the naked eye.

Four miles away, it was no longer possible to see with the naked eye where the artillery was falling, and it was not even clear whether the shells had fallen in the circle. But Li Zhi looked through a telescope and saw clearly that the shell fell twenty meters to the left of the lime circle and crashed into a patch of reeds. Li Zhi took off the binoculars, and sure enough, he heard the cannon commander shouting: "Eighteen steps to the left!" ”

The gunners went up and dragged the gun mount and relocated the gun in the middle of the casemate. Based on the observation of the gun commander, the gunners readjusted the angle of the muzzle with moments and fired again.

The artillery opened fire again, and with a roar, the shells drew an arc in the air and flew towards a white circle four miles away. In the end, the cannonball smashed headlong into the lime circle with a diameter of 30 meters, smashed a piece of dirt, and bounced forward.

The artillery commander excitedly shouted: "Hit the target!" ”

The gunners jumped to their feet and high-fived each other. Being able to hit a target from a distance of four miles still makes the gunners very proud.

####

The demand for reading glasses is still slowly fermenting. People who buy glasses use glasses in front of others, which gradually leads to more buyers.

Xie Jindao stood in front of the Li family's optical store, a little hesitant.

Xie Jindao is a student, that is, a showman. He took the exam for many years, when he was twenty-eight years old, when his parents were still there, and the family raised him as a scholar. But this year, Xiucai is not worth much, he has been a Xiucai in vain, and he has been busy all his life. Now he has sent away his dead parents and relied on teaching in the Wang family school to make a living. At the end of the year, the students only gave more than 20 taels.

Although more than twenty taels should be enough for him, Xie Jindao is good at the things in the cup, he is addicted to alcohol, and every time he has a few dollars in his hand, he has to buy wine to live, so he can't save a few dollars all year round.

That is, greedy for a cup of good wine, Xie Jindao still hasn't married a wife at the age of forty-eight, and he is still single.

In the past few years, Xie Jindao feels that his health is getting worse and worse. First of all, the legs and feet are not flexible, there was nothing to do when I walked twenty miles of mountain roads before, and now I can't walk from Wangjiazhuang to the ten miles of flat roads in the Acropolis, and I have to rest twice on the road. Secondly, my hands began to tremble, and I didn't know why I was shaking, and I didn't stop shaking without resting on anything.

Could it be that you drank too much?

But these are small things, and the most troublesome thing is that his glasses are starting to wear out.

As a reader, getting old glasses is a big problem. I can't read books clearly, I can't write well, and worst of all, I can't teach well. Xie Jindao couldn't read the article written by the student clearly, and squinted his eyes from a distance, at least three of the ten words were guessed, and only in combination with the context could he guess what the student wrote. How does this work? If this continues, Xie Jindao will be dismissed by the head of the Wang family.

Without the work of this gentleman, Xie Jindao would starve to death. He is a talented person, but he doesn't want to starve to death in his forties.

Xie Jindao met Mr. Wang Family's bookkeeper a few days ago, and saw that Mr. Bookkeeper was wearing two pieces of glass on his nose and was doing accounts there. Xie Jindao asked him, are your glasses not old? The bookkeeper triumphantly pointed to the glass on his nose and 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 bookkeeper said: "This is called glasses, specializing in the treatment of presbyopia, I bought it for ten taels of silver, and when I put it on, I can see the words clearly." ”

Only then did Xie Jindao know that there was such a thing in the world that could cure presbyopia. He tried Mr. Ledger's glasses, but it didn't work, and Mr. Ledger said that everyone's glasses were different, and he had to go to the store to get them. Xie Jindao didn't doubt the effect of these glasses, after all, it cost ten taels of silver, and he could earn so much silver without effect? He asked the bookkeeper about the location of the Li family's shop, and then walked here.

But when he got here, he was a little reluctant. Ten taels of silver, enough to buy five jars of Jinhua wine - he has been reluctant to drink Jinhua sweet wine in recent years. In the past few years, the bundles sent by his students have been thin, and he has bought some Tianjin soil wine to live.

But if you don't cure this presbyopia, let alone drink, you won't have to eat.

Xie Jindao sighed and walked into the Li family's glasses store with ten taels of silver.

There were a few people in the store, and in addition to himself, there were two customers auditioning. As soon as Xie Jindao entered the store, a small servant greeted him and said with a smile: "Old man, your surname, are you here to cure presbyopia?" ”

Xie Jindao straightened his clothes and said, "The old man's surname is Xie, and he is a student. ”

The little guy suddenly realized, and immediately said respectfully: "It turned out to be Xie Xianggong, how many years has Xie Xianggong been presbyopia?" ”

Xie Jindao was still in pain for ten taels of silver, and said angrily: "It's been two years, and I've been very old, and the students' articles can't be read clearly." ”

The little guy said wait a minute, then went to the back and took out a box of glasses, took out a pair and put it on Xie Jindao, and said, "Xie Xianggong, what do you think of these two hundred degrees?" ”

As soon as the glasses were put on, Xie Jindao squinted his eyes and looked at the book "Spring and Autumn" on the table, flipped through it, and sure enough, he found that he could see the words on it clearly. Xie Jindao's eyes narrowed helplessly, and secretly said that these ten taels of silver must be spent!

Wutan Jinhua sweet wine is gone all of a sudden.

Xie Jindao said in a rough voice: "See clearly!" ”

The little guy didn't let go of Xie Jindao, and handed over a pair of glasses to replace the pair on Xie Jindao's nose, and said, "Xie Xianggong will try this two hundred and twenty-five degrees again!" ”

Xie Jindao flipped through the book "Spring and Autumn" again, and said, "It's clearer!" ”

The little guy got Xie Jindao a pair of 250 degrees, put it on and tried the effect, and found that it was not as good as 225 degrees.

Then the little guy said, "That's this pair of two hundred and twenty-five degrees!" ”

Xie Jindao was not surprised by the effect of these glasses, these ten taels of silver must have such an effect, otherwise he could earn so much silver? But he was distressed again, and he got up for ten taels of silver. Xie Jindao looked at the shopkeeper of the optical store sitting inside, and saw that he was looking at himself expectantly, and couldn't help but snort coldly - these profit-seeking businessmen really eat people without spitting out bones, and two pieces of glass cost ten taels of silver!

Xie Jindao slapped ten taels of silver on the table with a snap, and said coldly: "The silver is here, you can put it away!" ”

The little guy walked in with the silver, weighed the silver with a scale, and then said with a smile: "Xie Xianggong, we still have a box for you, you wait." ”

The little guy walked in and took out a rectangular box, handed it to Xie Jindao, and said, "This is a box dedicated to storing glasses, Xie Xianggong, you can take it!" ”

Xie Jindao breathed a sigh of relief when he thought that now that he had cured his presbyopia, Mr. Clanxue's errand was saved. However, thinking that he had spent a full ten taels of silver, which was enough for five jars of Jinhua wine, Xie Jindao couldn't help but snort heavily.

Profit-seeking businessmen! I don't understand the teachings of saints!

With a wave of his hand, he took the glasses case, and Xie Jindao walked away with his glasses.

————————

Thanks to the down-and-out fat man's 500 tip, thanks!