I was engaged in infrastructure construction in the Han Dynasty [Transmigration Book]

Liu Tan saw that Li Buyan was thinking about whether to deal with him, and suddenly heard someone say: "Li Buyan, why are you talking to His Highness?"

Liu Tan turned his head reflexively, and immediately wanted to throw the bow in his hand: When did Huo Guang come?

Huo Guang walked over and said slowly: "Your Highness has so many things to do every day, how can you have time to practice riding and shooting? Next time let me hear it, you can copy "Zuo Zhuan"."

Li Buyan immediately apologized honestly to Liu Tan: "I made a mistake, Your Highness is not to blame."

Liu Tan waved his hand: "My accuracy is a bit off."

Huo Guang said softly: "There is a trick to this too."

Liu Tan's eyes lit up immediately, it was too late for him to practice archery now, if there is a shortcut, of course it would be great.

Anyway, he doesn't need very good basic skills, he just needs to be fooled by the spring hunting in front of him.

It has to be said that Huo Guang is obviously more suitable to be a teacher than Li Buyan.

Patient and meticulous, soft-spoken, and very tactful.

It's a pity that Liu Tan is not a good student. After Huo Guang tried his best to teach for a long time, he could barely let the arrow hit the target, and he still missed eight out of ten times.

Until the end, Huo Guang felt a little melancholy. He probably couldn't understand why some people couldn't learn such a simple thing as archery.

However, when he saw Liu Tan was downcast, as if the cat's ears on his head were drooping, he immediately comforted him and said, "Your Highness's strength lies not in this, don't be discouraged, Spring Hunting..."

Huo Guang paused at this point before saying: "Spring hunting doesn't have to have prey, His Highness just relax and treat it as a game."

When Huo Guang said this, he was a little guilty. The big man is a martial artist. In fact, spring hunting is a place for everyone to show off. Although leading soldiers in battle at this time also pays attention to strategy, everyone will still preconceived to find someone who is stronger and has a higher force value. .

Therefore, many generals of the Han Dynasty actually came to the fore during the hunting in spring and autumn.

But these are really not that important to Liu Tan. No matter what, he can no longer lead the troops himself, so... it's not bad just to play.

However, Liu Tan was not convinced. Just now when Li Bujin said that Liu Fuling shot a deer, Liu Tan didn't really care that much, but what Liu Tan cared about was whether Liu Qushou would take the opportunity to make trouble.

This guy is a fly... Forget it, he is the prime minister of a big man anyway, give Liu Che some face, he is a bit more advanced than a fly.

In a short period of time, this person will definitely not be able to cause any harm to Liu Tan, but it is annoying if he comes over and buzzes twice when he has nothing to do.

Liu Tan didn't want to be talked about by Liu Qusha again because of this incident.

Liu Tan looked at the bow in his hand and thought, isn't it just aiming?

The technology is not enough to equip!

It's time for things like sights to appear.

Liu Tanchang let out a long sigh of relief. He originally thought that after getting out the toilet, he would be able to take a rest and wait until he returned to the northern border country, but he didn't expect to do something for the sake of face.

But think about it, for the long-term development, this is a good thing.

Even if it may be the same as the harness, even if it appears, it is currently a plaything of the nobles, and it is not equipped for the army at all, but this is due to financial constraints.

The big man is now cooking oil over a fire, and looks glamorous, but in fact the finances have been strained to a certain extent.

Otherwise, what about the lack of general stars?As long as you are willing to fight, even if it is impossible to defend Huo again, there will always be generals who are almost usable.

It's a pity that even Liu Che doesn't dare to start a war easily now.

Liu Tan sighed and began to work on the sight.

There are simple and complex things like sights. If it is to equip archers, then he may choose the simplest one, because that kind of cost is low and can be promoted the fastest.

But now he wants to use it himself, so he chose a more complicated one-a five-pin sight.

The five-needle sight is considered to be the most useful mechanical calibrator. Liu Tan first came into contact with this thing because he had rich second-generation friends around him playing compound bows. He once joined in the fun and bought 36 arrows on a group purchase to try it out. for a moment.

The result... How should I put it, he felt pretty good at the time, after all, he was guided by professionals, and although his grades were not particularly good, at least he was on target every time.

This also caused him to be very inflated before, thinking that Liu Fuling can do it, so can he.

Then... I was taught to be a man by the traditional bow.

It turns out that without the sight, he's no different than a piece of shit.

The focus of the five-needle sight is the peep hole on the bowstring and the sight frame, and there are horizontal bubbles and five sight needles in the sight frame.

The so-called level sounds very high, but it is actually just a transparent hollow tube filled with colored liquid, but it is not filled, but a small section of air bubbles is left.

The most important thing about the horizontal bubble is the bubble. There will be a scale at both ends of the horizontal bubble. When the bubble is in the middle, just within the range of the scale, it is in a balanced state.

This is to play an auxiliary role in adjusting the sight. In fact, it is naturally good to have it, and it is fine without it.

Of course, the most important thing is that if you really want to promote the sight with a horizontal bubble, it is easy to get stuck on it.

Because Liu Tan used crystal-polished transparent tubes when he made the horizontal bubbles.

Just like this, the transparency is not very high. Crystals are really a luxury these days. If they are really necessary, let alone ordinary soldiers, many middle-class people may not be able to afford them.

So Liu Tan thinks it is dispensable. Anyway, archers these days are participating in the battle without sights, and even sights without level bubbles can greatly increase their combat power.

But Liu Tan is for his own use, so let's add it.

The horizontal bubble is not the key point, but the aiming pin. The aiming method of the sight is three points in one. The advantage of the five-pin sight is that it does not require more adjustments than the single-pin sight. It doesn't matter if the needle can be aimed, if there is a single needle, you have to find it.

The most troublesome thing about aiming needles is that there is no light.

The needles of later sights are all illuminated, and now Liu Tan must have made something that is illuminated, so he can only find a way to get some things that emit light, such as fluorite.

Oh, these days, it is called luminous pearl with fluorite, and it is a very precious thing anyway, Liu Tan can already imagine that if someone knows that he uses luminous pearl powder as a fluorescent agent, he will say that he is extravagant.

When they heard that he was going to grind Ye Mingzhu, Miao Rui and Bi Gao were both shocked.

You must know that there are not many luminous pearls in the palace, as long as they are luminous pearls, they are very precious.

Miao Rui and Bi Gao desperately held Liu Tan to prevent him from doing anything.

Liu Tan: ...

Isn't it fluorite?Although it is precious, it's not to the point where you don't even want your life, right?

In the end, Liu Tan had no choice but to settle for the next best thing and choose ordinary paint. Anyway...he didn't need to aim at night, as long as there was light, the aiming needle could be used.

The five aiming pins should be placed on two wooden posts respectively. After all, the aiming frame is relatively small, and if they are all placed on one wooden post, they cannot be separated at all.

However, during the installation, Liu Tan encountered the biggest difficulty in making the sight - the flexible adjustment part.

All parts of the sights in later generations can be adjusted. For example, the sights can be adjusted forward and backward when placed on the bow and arrow, and the sight frame can be adjusted up, down, left, and right, not to mention the sight needle.

But those adjustments are all based on the development of industry, and many things cannot be made now, because the precision required for this adjustment is too high, and manual work may be able to meet it, but as long as it is something that relies on manual precision, it has nothing to do with promotion.

In the end, Liu Tan chose to set the size according to his own habits during production, and then prepared to let Huo Guang and others experiment by collecting data separately and taking the average.

Just when Liu Tan was about to call someone to come over for the test, Bi Gao came over and said, "Your Highness, the Gong barrel that was sent to His Majesty before is broken."

Liu Tan was stunned for a moment, and then realized that what he said should be a siphon toilet, he couldn't help being surprised: "What's broken?"

It shouldn't be, although this thing was originally intended to be given to Liu Shi, it has also been strictly inspected. It's only been a few days, and it's broken before it arrives in half a month?

At that moment, he thought of many possibilities. For example, ceramics are not suitable for water pipes, or pork belly is not suitable for floating balls, and even the water plug is not waterproof.

In fact, there are only a few places that are prone to problems.

However, Bi Gao said: "It is said that the pressing mechanism is broken."

Press the organ?Water button?

Liu Tan was startled: Is his father urinating frequently?