The bookkeeper asked, "Is this the glasses?" ”

The little guy replied, "Yes, how many years have you been old?" ”

Hearing this inquiry, Zhang raised his head and thought about it, and said, "I'm afraid it's been four or five years, and these two years are particularly serious!" ”

The little guy took out a pair of glasses, handed it to the account room, and said, "Try this, three hundred degrees!" ”

Zhang was stunned, looked at the little guy and asked, "How to try?" ”

The little guy smiled embarrassedly and said, "You see I'm all excited and confused, how do you know how to try it the first time you come?" I'll put it on for you! ”

Zhang was about to answer, but the little guy handed over the pair of glass pieces to himself, stuck the wooden frame on the ears of Zhang Zhang, put the beam in the middle of the glasses against the base of Zhang Zhang's nose, and blocked the two pieces of glass in front of Zhang Zhang's eyes. Pen? Interesting? Pavilion wWw. ｂiquge。 ｉｎfo

Zhang was stunned, a little unable to react, and said, "What are you doing here?" ”

"Cure your presbyopia!" The little guy said loudly. He raised a copy of "Spring and Autumn" in his hand, turned to the first page, raised it to the front of the account room, and said loudly: "Old man, now you can read the words on this book through the glass, is it clear?" ”

Hearing this, Zhang squinted his eyes and looked at the book "Spring and Autumn" through the glass.

Strangely, through these two pieces of glass, Zhang Ledger really vaguely saw the contents of the first page of the book. It's still not clear, but it's much clearer than when I didn't wear glasses.

These glasses are really useful!

It turned out that the Li family used this glass to treat presbyopia, no wonder they didn't see Langzhong. Zhang looked at the store with glasses on, and then he saw that the decoration of this shop was gorgeous, and it didn't look like a scam.

I'm worried about it.

"It's clearer, it's still a little vague!" Zhang looked at the little guy's glasses box with some expectation, and looked at the more than twenty pairs of glasses inside.

"Then try 350 degrees again!" The little guy took off the glasses from his nose and put a new pair of glasses on him.

"It's even more confusing, it's not as good as just now!"

"Then try 250 degrees!" The servant took out a new pair of glasses from the box.

"See! See! ”

Zhang was a little excited, and stood up with a loud shout. Wearing this pair of "250-degree" glasses, Zhang Zhang's account room immediately saw all the words on the first page of the "Spring and Autumn" half a step away. How amazing is that? This presbyopia, which had tormented him for several years, was conquered by these two small pieces of glass, allowing Zhang to see the words on the book clearly!

"It works! It's really useful! ”

Zhang Shufang slapped his thigh, took the spring and autumn book from the little girl, turned over the pages one by one, and found that he could read every word in the book clearly.

Zhang believes in his eyes, this is really clear, and it is definitely not a deception. With these glasses, wouldn't I be able to help the owner keep accounts again. I kept my errand of one or two or eight dollars?

This new thing of the Li family is magical!

Zhang took off his glasses happily, looked left and right, and asked happily, "How much is a pair of eyes?" ”

"Ten taels of silver!"

Hearing this, Zhang was stunned. Ten taels of silver, not cheap! It's worth half a year's monthly money!

But in any case, it's better than losing an errand, isn't it?

After thinking about it, Zhang asked the bookkeeper, "Can it be cheaper?" ”

"Uncle, we are at cost price, it can't be cheaper, this is made of colorless glass? Can it be cheaper? But don't worry, if your presbyopia is more serious in the future, take 250 degree glasses to exchange for more advanced glasses, we don't charge money, free change! ”

Zhang Ledger still has some savings, and when he heard this, Zhang Ledger made up his mind to buy him a pair! The goodwill of the Li family is here, and if you say that you can change it, you can change it, and buying a pair of glasses is equivalent to getting rid of the problem of presbyopia in this life, and you can always be a bookkeeper until you can't walk.

Zhang was anxious to put on his glasses to make accounts, and went to ask the owner to continue to hire him, and said, "I'll go home and get the money, when will you close!" ”

The little guy smiled and said, "You go slowly!" No hurry! You're our first guest, you don't come back, we don't close today! ”

In the middle of March of the ninth year of Chongzhen, the city wall of Fanjiazhuang was completed with bricks.

The three bread bricks of the city wall share 2.88 million pieces of green bricks and 580,000 catties of cement. The brick-clad wall has a circumference of three thousand meters, a height of five meters, and a width of three meters. The city wall was built with a horse face every 20 meters, and there were 150 horse faces in total. There is a buttress every meter and a half, and there are 2,000 buttresses in total.

The top of the city wall is wide enough to run horses. There were sixteen heavy artillery batteries on the walls, four on each wall.

The built city wall is straight and majestic, very beautiful, and makes the whole Fanjiazhuang look very secure. Whether it is a textile factory, a soap factory, a glass factory, a cement factory, or the houses and military camps of Fanjiazhuang, they are now under the protection of the towering city walls.

After repairing the city wall, Li Zhi asked this group of masons to continue to build villas and provide residences for the expanding Fanjiazhuang.

In mid-March, the gunsmiths succeeded in creating a "standard cannon".

The standard cannon made by the gunsmiths was an eighteen-pounder gun, with a caliber of four inches, a cannon ten feet long, a direct firing range of 1,500 meters, and a maximum projectile range of 6,000 meters. Li Zhi's gunsmiths used the iron-core copper body method to cast the cannon, so that the weight of the cannon dropped from the theoretical 3,700 catties to 3,200 catties, and the cost was reduced to 38021 catties.

Li Zhi asked the gunners to transport the cannon to the shooting range and let the cannon shoot at a large iron plate two meters long and wide 500 meters away.

The blacksmiths were embarrassed to see that the target was so far away, but they still shot as required.

When they arrived at the shooting range, the gunners drove the wagon to adjust the direction of the guns, and then the four men lifted the gun carriage and the two pulled the carriage, and then the guns were unloaded from the carriage. Then the gunsmiths began to clean the chamber, brushing each of the two brushes in the chamber once before measuring the angle of the cannon and the amount of gunpowder with a gauge, ruler and moment. After the calculations were done, the gunsmiths poured out the gunpowder from the standard gunpowder packets and used wooden sticks to solidify it. Then put in the shells and do it again. Then pour some gunpowder on the fire door and insert the fire rope.

Cao Yu, the leader of the gunsmiths, lit the fire rope, which soon ignited the ******. Only a loud boom was heard, and the eighteen-pounder cannon spat out tongues of fire and sprayed cannonballs at the large iron plate in the distance.

The first shell flew out like a bolt of lightning and disappeared from everyone's view in an instant.

The shell missed and did not hit the iron plate.

Li Zhi knew that the target was too far away, so he asked the iron plate to be moved 200 meters away and let the artillery fire again.

The gunners were a little confident this time, they adjusted the angle and fired again.

This time the shell did not deviate, only a loud bang was heard, and the shell hit the large iron plate. The upper left corner of the half-inch-thick iron plate was punched out of a big hole. The shell bounced several more times after penetrating the iron plate, rushing forward several hundred meters, interrupting a tree in its path, and then stopped its momentum.

Li Zhi took a closer look and saw that the hole of the iron plate was five or six inches large, and the iron plate on the hole was rolled back, which looked very shocking.

This cannon is so powerful that even if a chariot comes to attack a city, it can shatter it with a single shot.

Li Zhi asked the gunsmiths to cast eighteen standard cannons, sixteen of which were placed on the turret, and two were for backup.