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In the fields of Kelongli, a small blue flower bloomed.

This is a rare herb called Brassica japonicus. Both the leaves and stems can be eaten, and the leftovers can be made into pickles.

But in times of drought, it becomes fodder for livestock and wild flowers.

Local folks call it February Orchid.

According to legend, after Zhuge Liang became Liu Bei's military advisor, he was in charge of military rations and taxes.

Once on a patrol, I saw a kind of vegetable. I learned from an old farmer that this vegetable was full of treasures and was the family's ration during the lean years.

So I asked the old farmer about the yield and planting method, and ordered the soldiers to plant it when they were in the fields. On the one hand, it could supplement the army's food supply, and on the other hand, it could be used as livestock feed. It was economical and practical, killing two birds with one stone.

Therefore, it got another name: Zhuge Cai.

Facts have proved that the back mountain terraces are feasible. A thick layer of silt in the swamp is applied and poured into the mountain springs to form fertile fields.

The swamp was turned into ridges and waterways. On the ridges, Su You planted wild rice grass, which will produce a large number of wild rice this year.

With the rope-making machine and sodium silicate, the quality of the twine in Kelongli was very high, and the elderly in every household in the village had no time to spare and began to learn to weave fishing nets.

After the beginning of spring, the third and fifth brothers went to the surrounding towns and bought 300 gilts at a super low price amidst a lot of ridicule.

The big and small butchers are extremely busy, and their craft of slaughtering pigs is advancing by leaps and bounds.

The chickens and ducks of each family began to come out of the sheds, and the Tutu Temple came to collect the eggs once a week.

The children were weak, so Su Xiaomei came up with a way. When cutting the cold chicken pieces, she first put the knife on the meat, and then smashed it with a wooden stick. Therefore, this dish was called "Bangbang Chicken" by the merchants, and "Bangbang Chicken". Beef and twice-cooked pork have become the three major meat dishes that customers must order.

The villagers were busy trimming the fields. After applying manure from the cow pens and pig pens in the fields, they dug out a piece of land carefully, dug out the small mud chunks in the mud with their feet, kneaded them one by one into a pulp, and used bamboo to make a paste. The slices are flat, this is the seedling bed.

A year's plan begins in spring, a day's plan begins in the morning.

Early in the morning, amidst the rhythmic banging of the forging bed, a child's voice came loudly.

"Every herdsman who has land should guard the barns at all times. If the country has plenty of wealth, those from far away will come; if the land is raised, the people will stay; if the barns are solid, they will know the etiquette; if they have enough food and clothing, they will know the honor and disgrace; if they have enough food and clothing, they will know the honor and disgrace; if the land is raised, the people will stay. When the six dimensions are balanced, the six relatives will be strong; when the four dimensions are open, the emperor's orders will be carried out..."

"Government thrives because it obeys the people's will; government fails because it goes against the people's will. When the people hate it, they are worried and laborious, and I take pleasure in it; when the people hate poverty and lowliness, I make them rich; when the people hate it and are in danger, I keep it safe; when the people hate it and become extinct, I give birth to children. Of……"

"Treat your home as your hometown, and your hometown should not be ruled by it; treat your hometown as your country, and your country should not be ruled by it; regard your country as your world, and the world should not be ruled by you. Treat your home as your home, your township as your hometown, your country as your country, and your world as your world. .If you say you are from a different country, those who are far away will not listen; if you say you are from a different hometown, those who are far away will not be able to do it; if you say you are from a different country, those who are far away will not follow you..."

Zhang Qi and his younger brothers were learning to forge small iron beads, and they kept talking: "Listening to the young master reading makes me feel comfortable."

Liu Si poured a bucket of steel balls into the bead bucket and asked a younger brother to start the bead grinding machine: "Please concentrate on it. It's not for fun to crush your hands."

The machine started rotating, and the beads rolled down from the center of the bead grinding machine to another barrel along the equidistant spiral grooves, where they were ground again by the grinding disc above the spiral.

A child was holding a micrometer to inspect samples: "Fourth brother, this time it's almost done."

Liu Si took the ruler, inspected it, and said, "Well, the next step is polishing, everyone is optimistic."

Pour the steel balls into a roller, add oil, let the roller rotate, and then add some very fine mud-like abrasives. Soon the foggy steel balls will become shiny.

After several times of washing and ball milling, the abrasive added became finer and finer, and the resulting steel balls became brighter, and finally they were able to make out human figures.

Liu Si handed a small steel ball to each child. The children looked at the reflection on the beads and turned into round pig heads, and they couldn't help but laugh at each other.

Liu Si placed the inner ring of the bearing turned out by a lathe in the shallow recess of an iron plate, and placed the steel balls one by one into the fixed ring of the inner ring, arranging them one by one, and then took out a dark red ball from the furnace.

Put the outer ring on, tap it a few times with a hammer to get the outer ring in place, then pick up the iron plate with a long hook and put it into the cold oil tank.

After a few moves up and down, a ball bearing is produced.

Liu Si used iron pliers to pass through the inner ring, open it and jam it. He gently pushed the outer ring, and the bearing immediately started rolling rapidly.

Liu Si said proudly: "You can make more than ten bearings at a time. This is a demonstration, so I will make one for everyone to see. The young master said that friction is related to the contact area between objects. Balls can reduce the contact area to

Minimum, so the friction is much smaller than that of roller bearings, everyone understands, right?"

A child said: "There is also the principle of thermal expansion and contraction! The outer ring can seal the beads in the inner groove, which is related to this."

Liu Si nodded: "Well, twenty-three, you are very smart, but it is a difficult problem to determine the shrinkage ratio of the steel, the depth of the groove, and the temperature of the outer ring. The difficulty is not one or two. From principle to practicality, we have gone through countless experiments

, I got such an experience.”

"The young master said that in addition to understanding the principles, the results of science and engineering also require a large amount of experimental data for reference, so don't think that you can do anything if you learn theoretical knowledge!"

Zhang Qi said: "That is, the large rose red bottle sent to Bianjing this time, the ceramic coal group wasted nearly a thousand kilograms of porcelain clay materials, hundreds of embryos, five porcelain bodies were glazed and burned, and four parts were destroyed.

Well, this is what the young master said: easier said than done! Right, young master?"

Su You closed "Guanzi" and said: "Yes, but this idiom comes from Shangshu, but it also has another meaning. It talks about the principle of life. It is easy for people to know what is wrong with them, and they also know that these shortcomings are wrong, but they just don't

Willing to change."

"Therefore, there is a saying that a gentleman should be self-restrained, restrain his selfish desires, and be strict with himself. Overcoming others is not a skill, but overcoming the bad habits in oneself is the skill."

Zhang Qi felt that the young master was talking about him, so he turned around and changed the subject: "Fourth, have you finished over there? Come here and help me!"

Liu Si waved his hand and took out a copper plate: "I don't have time to pay attention to you. The girls are clamoring for a mirror. Now that the abrasive is out, I will bring it back to them today!"

Zhang Qi was extremely contemptuous: "Huahua has a lot of intestines, and he knows how to please the little lady all day long."

Su You said earnestly on the side: "Brother Xiaoqi, your engineering dog nature is getting more and more serious now. In a few years, if you can't find a wife, don't cry."

Several people chatted and started working on the mirror. Su You said: "I heard that there is a kind of precious mirror. It is no different from ordinary mirrors. But once it reflects the sun's rays, text patterns will appear in the light and shadow on the wall. Let's try it today.

It can’t be done.”

Liu Si put abrasive ointment on the wool wheel and said, "What the young master wants to do, there is nothing he can't do."

Place the copper plate on a flat surface, let the wool wheel rotate, then adjust the screw to press the copper plate, and then push the copper plate to start polishing.

There was originally a shallow lotus flower cast on the copper plate. After several changes of grinding paste and wool wheels with different meshes, it was quickly polished to almost no trace, and the copper plate became smooth and clean, and could be used as a mirror.

.

Washing the copper plate with alkaline water, several people ran to the sun again: "Come and see the effect."

Hachiko was weaving baskets under the eaves, and his eyes were dazzled by the bronze mirror. He raised his head and cursed: "What are you messing around with again!"

The children hurriedly turned the light in a direction, laughing and joking, and a spot of light appeared on the whitewashed wall. Sure enough, there was a vague trace of a lotus flower below the spot.

The children cheered in unison: "Yeah! It worked!"

Su You took the bronze mirror and looked through it: "No, no, no, you can see some traces of lotus flowers on this mirror. Polish it a little more, polish it a little more, and then add a lotus flower behind the mirror to make others think it is a lotus flower."

It's through behind the mirror, that's how you can fool people!"

Zhang Qi chuckled evilly: "Young Master is so mean-spirited! But I like it!"

So the three of them started working again with great interest.

After tinkering for a while, the three of them looked at the clean spots on the wall again: "Damn, you've overdone it!"

Liu Si complained: "I blame you all! Look! Now it's the head of a great monk!"

Zhang Qi retorted: "The big monk has a ring scar on his head, it's obviously the little monk's head."

Su You put his hand on his forehead: "Well... failure is said to be success, mother. Anyway, this thing can also be used as a mirror. Fourth brother, just use it to fool the sisters..."
Chapter completed!