Playing intrigue is worse than engaging in infrastructure

But looking at the construction site below to prevent any accidents, the most common telescope can also meet this demand.

Song Qingyuan thought about it, and decided to use the simplest principle of the Galileo telescope, using only a single lens as the eyepiece and objective lens, just make an ordinary monocular telescope.

After all, more advanced telescopes have higher technical requirements, and ordinary ones may not necessarily be useful.

The principle of the Galileo telescope is actually very simple. It uses the principle of refraction of light to first refract objects in the distance through the objective lens, and then image them behind the eyepiece.The formed real image is magnified by the eyepiece, and what the human eye sees is the final magnified virtual image.

But if you want to see the image clearly, you need to know the focal length of the objective lens and eyepiece.

This is not a big deal in later generations, but in this era of nothing, it is obviously quite difficult.

And this is why Song Qingyuan asked Jiang Duo to find more crystals for preparation. He estimated that the craftsmen would have to go through a lot of trials before they could make a telescope that could image clearly.

Song Qingyuan recalled the telescope he used in his previous life. A telescope that can meet daily needs, its magnification between seven and ten times is enough.

If the multiple is too high, although in principle, you can indeed see far away.

But correspondingly, the diameter of the objective lens should also increase accordingly, otherwise the picture seen will easily be blurred.

However, if the aperture of the objective lens is too large, it cannot be used by hand, and a bracket must be equipped for the telescope, and it can be fixed and used with the help of the bracket.

Song Qingyuan imagined the scene of himself running all over the mountain holding the bracket, and immediately rejected this idea.

When the seven-power telescope looks at the scene five kilometers away, it is as clear as looking at things hundreds of meters away.This is enough for observing the blasting site under the mountain.

If it weren't for the consideration that the telescope might be useful in other occasions, Song Qingyuan even wanted to make a three or four magnification telescope for use, so that it would save some effort when polishing the lens.

But it wasn't until drawing the blueprints that Song Qingyuan suddenly realized that they didn't have the technology to make the hollow cylinder outside the telescope with metal.

As for making two semi-cylinders that can be joined together, it may take some effort to achieve a tight fit with the current technology.

Song Qingyuan struggled for a moment, but he gave up his original plan to make that kind of brass telescope that was so exquisite that it could be used as an ornament, and asked someone to call some craftsmen back from the carpenter's workshop.

A telescope with a wooden case is even lighter.Song Qingyuan comforted himself.

On the fifth day after Song Qingyuan drew the blueprint, Jiang Duo brought Shuiyu to the tent.

Jiang Duo has always been considerate in his work, even though Song Qingyuan didn't order him, he still brought back a few skilled jade cutters.

In addition, the craftsmen from the carpenter's workshop also rushed over. It was obviously the most spacious main tent, but now it looks a bit cramped.

Song Qingyuan handed the two blueprints to several craftsmen respectively, and asked, "Can you understand?"

Among the carpenters who were sent, except for the oldest one who came from the Southern Zhou Dynasty with Song Qingyuan, the remaining three were all graduates of craftsmen's schools.

The artisan school has only been opened for one year, and many students have successfully passed the school's test and entered various workshops to work.

The monthly salary alone is enough for them to live affluently, not to mention taking on some private jobs outside.

Because he had learned the knowledge of drawing when he was in the academy, he didn't feel unfamiliar when he saw the blueprint handed over by Song Qingyuan, and he agreed to it very briskly.

On the contrary, it was a few jade cutters who were responsible for polishing the crystal.

After Song Qingyuan told them that it doesn't matter if they failed even if they spent a few more water jade, they were relieved.

It's not that they are not confident enough in their skills, the main reason is that the water jade in front of them is crystal clear, and it is a rare high-grade at first glance.

Coupled with the fact that the drawing was in a style they had never seen before, they were immediately afraid of being punished by Song Qingyuan for ruining such a good material.

But with this sentence as a guarantee, they dared to carve with confidence.

Fortunately, the technical requirements for the monocular are really not high. Apart from the first two failures with blurred vision, they quickly produced a telescope that met Song Qingyuan's requirements.

The carpenters in charge of making the cylinder did not forget to carve a circle of patterns on it, and then painted a layer of wood lacquer to prevent the wood from being deformed by water.

Song Qingyuan looked at the telescope, which was far more exquisite than the bare wooden barrel he imagined, and nodded with satisfaction, and brought it closer to the snow mountain valley that afternoon.

In the past few days of making the telescope, the construction site is also building roads non-stop.

Song Qingyuan glanced at the drawings and found that they had already laid half of the roadbed.

Even the wasteland dug out on the side was neatly planted with rows of saplings under the command of the steward.

This progress can be considered a pass even in later generations.Song Qing couldn't help but look at the sin slaves waving various tools on the gentle slope.

The weather has not yet warmed up, and he added a cashmere sweater to his clothes today, but the workers underneath are already steaming from their heads.

Song Qingyuan looked at the busy crowd for a while, then turned his head and gave Jiang Duo a look.

Jiang Duo immediately understood, and ran down to tell the steward: "The food provided to them during this period is better, and more meat is added. After the project is over, each of them will be given a share of money, and it is said that our Highness rewarded them." of."

The steward hurriedly responded, looked up at the person standing on the top of the slope in the distance, and sighed sincerely: "Your Highness is kind."

The distance between Song Qingyuan and the steward was a bit far. Even with a telescope, he could see the steward's lips opening and closing, but he couldn't hear what he said.

After these sin slaves finished working here, they had to go back to the mines to work, and the money given to them was useless.

But hard labor also has a limited number of years, and most people can recover their freedom after a few years of hard labor, and the money they get from Song Qingyuan can give them some help at that time.

This was one of the few things Song Qingyuan could do for these people.

With a telescope, Song Qingyuan began to observe the situation in the valley.

Although it is covered by lush forests, it can still be seen that the soil in the valley is the kind of dark brown soil with moisture, and it is very fertile just by looking at it.

And the trees growing in the soil are also very tall, and it will never reach such a height within a few decades.

Song Qingyuan also knew the importance of the creatures in the valley to the environment.If these forests are cut down and animals are driven elsewhere, the land here will quickly become barren.

Besides, this valley is at least hundreds of thousands of acres in size.

If all the tea leaves are planted, one person can barely manage an acre of land. When it comes time to pick tea, it may not be enough to hire the entire royal court and all the people in the vicinity.

The relatively large tea farms in later generations are only a few thousand acres in size, and the outermost hillside is enough for them to be busy. There is no need to destroy the original ecology here for tea plantation.

Besides, Song Qingyuan didn't know what was going on deep in the valley.

In this era, there are not as many exploration tools as later generations. If any serious disaster is caused, even Song Qingyuan will be powerless to recover.

After the road was repaired, Song Qingyuan sent people to start developing tea gardens non-stop.

Many tea houses that are closer to Mobei have already shipped a lot of tea seedlings Nanfeng, and they have to plant them quickly.

When developing tea gardens, not only should reasonable rectification be carried out according to the topography and soil layer conditions of the land, but also deep plowing should be carried out to ensure that the soil is suitable for the growth of tea trees.

Seeing that more and more tea saplings were being sent, Boyan and others who were in charge of opening the tea house became more and more anxious.

Every day before dawn, he got up and went to the land being rectified. After a few days, Boyan even developed several blisters around his mouth.

When tea trees grow, they need a lot of trace elements.For this point, in tea gardens of later generations, suitable fertilizers will be configured according to the results after testing the soil composition.

But now it was obvious that there was no such condition, so Song Qingyuan had no choice but to give up this step.

However, the soil here has been nourished by various fallen leaves and microorganisms for many years, and it is extremely high-quality fertile soil.Thinking about it, there would be no lack of various nutrients needed for the growth of tea trees, so Song Qingyuan was a little relieved.

Early this morning, Song Qingyuan drove out of the valley after routinely checking the progress of tea garden development.

As for why he didn't ride a horse, it was mainly because of the rugged roads in the mountains. If he rode a horse to and from various tea gardens, Song Qingyuan's bones would probably fall apart in a day.

He had worked really hard these past few days. After getting into the carriage, Song Qingyuan immediately leaned on the soft pillow beside him and closed his eyes to rest.

And the reason why he left the valley was because another group of merchants brought tea trees over today.

Among those busy in the tea garden, most of them even saw tea trees for the first time.Therefore, it was necessary for Song Qingyuan to come forward in person to check the condition of the tea trees brought in, and sign a contract with them to sell cloth by the way.

There were more than a dozen carts pulling goods parked outside the valley. Seeing that the people who came to count the saplings hadn't arrived yet, the several people who drove the carts found a leeward place and chatted with each other.

"You said, the third highness of Yanyun is not really planning to grow tea in Mobei?" One of them looked at the cloud-shrouded valley in the distance, couldn't help stretching out his arm to push his companion beside him, and asked aloud .

"Not good."

The person next to him has been traveling all year round, so he knows more about various news.He whispered: "I recently heard people say that the news that Mobei wants to buy a large number of tea seedlings has spread, and many caravans even rushed to the tea gardens in the southwest. We... are all close .”

"I remember that your ancestors were from the southwest area?" the man asked in an unknown dialect.

Because he often deals with people from different regions, he also has a lot of messy accents in his Mandarin, which sounds a bit joyful.

"That's not true. A few years ago, my hometown was hit by a disaster, so I could only go out with people from the same village to make a living."

Different from the person who spoke just now, he spoke pure Southwest Mandarin, and continued: "The harvest in the field has not been very good in the past two years, and there are not a few people like me who ran out to deliver goods for food. .”

"It's all difficult." The man sighed, "But there are a lot of people collecting tea seedlings over there these days, so they should be able to earn a few more pennies."

"Yes." He nodded.

Seeing that they were chatting lively, someone nearby came over and interjected, "But do you think this tea tree can be grown in Mobei?"

"It's hard to say." The person who spoke first curled his lips, "I have lived for so many years, and I have never heard that Mobei can still produce tea."

Just as the man was about to continue talking, the steward of the caravan standing at the front shouted to them: "You all get up quickly, someone is coming ahead."

When the carriage stopped in front of everyone and the curtain was lifted, the steward knew that the person who came to pick up the goods was actually His Highness Yan Yun himself.

Embarrassed, he wiped his hands on the hem of his clothes, stepped forward quickly, and saluted Song Qingyuan.

Song Qingyuan waved his hands to signal everyone to get up, and walked towards the cart pulling the tea trees.

The porters who were chatting together just now quickly moved out of the way for him.Song Qingyuan carefully checked the tea trees on each car.

Probably because of the relatively short distance, most of the tea trees are still green and full of vitality.

In addition, the roots of the tea trees are full of soil, and the soil on the roots of the trees is not cleaned to save weight.In this way, the probability of sapling survival is much higher.

Song Qingyuan smiled and patted the dirt on his hands with great satisfaction. He happily paid the other half of the purchase price and signed a wool fabric contract with them.

The caravan has worked so hard to make this trip, so it is naturally impossible to return with an empty car.

Before coming to Mobei, their shopkeeper ordered the manager to ask them to bring back more raisins and soap.These few things are very popular among the common people.

In this way, he can also make more money back.

After transporting the saplings back to the tea house, Song Qingyuan immediately sent someone to plant all the tea saplings before the sun had fully risen.

When planting the saplings, Song Qingyuan specially ordered the people to leave a distance of about three feet to the left and right of the tea tree, and about one foot to the front and back.

This distance can not only leave enough living space for each tea tree, but also improve the utilization rate of sunlight. It is a number that Song Qingyuan calculated after a long time.

A few days after the planting is completed, they have to seal and cut the roots of the planted tea saplings to reduce the transpiration of the saplings and increase the probability of survival.

The author says:

Mr. Song when making the telescope: It’s starting to be bad!

Thank you for your concern, I am much better today-thanks to the little angel of the irrigation nutrient solution: 10 bottles of blue chickweed; 1 bottle of Glory; thank you very much for your support, I will continue to work hard!