In the late Eastern Han Dynasty, the shipbuilding technology was already very developed, especially in the areas of Jingyang and Guangzhou, where there were buildings with complex construction techniques.

It was possible to sail along the mouth of the Yangtze River to the eastern part of Liaodong, and astrology was very developed at that time, relying on the stars, the moon and the sun to identify the direction, and the accuracy was very high.

The Eastern Han people's understanding of the tides of the sea is also quite profound, which is completely beyond the expectations of modern people.

Experienced captains and sailors are able to judge the weather at sea and the direction of currents with the naked eye.

Seriously speaking, in fact, the technology of the late Eastern Han Dynasty already had long-distance navigation requirements, and the only thing lacking was an epoch-making invention: the compass.

The weather at sea can be changeable, and it is easy to get lost in the sea if you can't find the direction.

Because of this, the emergence of the compass has become one of the four major inventions recognized in China and even the world.

However, according to the existing historical research, although it is impossible to know the specific time of the invention of the compass, it should be at least not earlier than the Northern Song Dynasty.

Therefore, China's long-distance navigation technology has also advanced by leaps and bounds since then.

Prior to this, the Central Plains civilization also carried out long-distance navigational exploration, and there were ships going to the Indian Sea during the Jin Dynasty.

But at that time, ocean voyages were very dangerous, and it was almost a gamble on life.

Therefore, if you want to carry out navigation exploration smoothly in the Eastern Han Dynasty, you need to add two things, a compass and a telescope.

The discovery of magnets by the Chinese has a long history, and the magnetic mountains were one of the important symbols of the search for iron ore at that time.

At this time, the name of the magnet was "Cishi", and it was believed that the magnet was the mother of iron, and the iron stone was inspired by the mother's love and attracted by it.

Therefore, the attraction of magnetism and iron has been discovered very early, and it is said that the gate of the underground palace of the first emperor was cast with magnets, in order to prevent people from robbing tombs with iron tools.

During the Western Han Dynasty, there was a monk named Luan Da, who used the characteristics of the magnet to make two chess pieces, which were called "fighting chess".

Dedicated to Emperor Wu of the Han Dynasty, and demonstrated on the spot, by adjusting the polarity, there was a phenomenon of attraction or repulsion, Emperor Wu of the Han Dynasty was amazed, the dragon's heart was happy, and he was actually named "General Wuli".

During the Eastern Han Dynasty, the prototype of the compass had actually appeared, Sinan.

Wang Chong said in the middle that "the ladle of Sinan, cast it on the ground, its guide to the ground", which is a relatively clear description of Sinan in the early days.

On this basis, to invent the compass is indeed a matter of course, and even a little bit of dialing is all he needs to do.

As for the telescope, every modern child may have owned a similar toy, which can be made from pure colorless crystals without glass.

Of course, he could also develop the glass process in the later period, although he did not know the manufacturing process of glass very well, but the approximate raw materials were still known.

Therefore, it should be easy to make colored translucent glass, but if you want to make crystal clear glass like modern times, you still need the support of many processes, such as soda ash refining and so on.

This is a later story, in the Han Dynasty, where the foundation was weak, it was already good to be able to make the most basic glass first.

Let the craftsmen slowly research and develop, overnight is not necessarily a good thing, always let them have a gradual process.

On the same day, Liu Zhi summoned painters and asked them to draw detailed drawings of rectangular telescopes and ordinary compasses according to their sketches.

He also gathered the relevant craftsmen and gave them a detailed explanation, which is different from cement and gunpowder, which does not need to be tested and developed for a long time, and only needs to be done.

The handicrafts of the Eastern Han Dynasty have been very superb, and difficult techniques such as hollowing and carving have long been widely used in jade.

At this time, crystal was also an important classification of jade, called water jade, which was mostly produced in the area of Donghai County.

Pure color crystals are not the most noble at this time, but Taoist monks are very respectful and consider them to be the elite of jade. Zhong Tiandi's spirit is beautiful, and eating it can increase the aura in the body.

The techniques of cutting, carving, grinding and polishing jade had reached an astonishing level at that time.

Therefore, pondering two convex lenses and concave lenses is a piece of cake for the top masters of the royal family.

After a few days of work, the compass and telescope were ready, and Liu Zhi checked it, and some details were still biased.

So they were instructed to make a second revision, and after repeating it several times, the finished product was almost ready.

The telescope was tested by him, and because it was too simple, the magnification was not too high, only about six times.

And there is also a big disadvantage, the phantom phenomenon is serious, which makes the distant scene presented in the telescope somewhat colorful, which seriously affects the clarity.

After his repeated memories and speculation, he carried out dozens of improvements and explorations, and finally produced a relatively clear finished product.

Moreover, the magnification factor has also been increased to about ten times, which can fully meet the needs of navigation or marching observation.

Liu Zhi was very satisfied with this effect, and asked the craftsman to make binoculars, and after feeling that the process was mature, he made dozens of pairs in one go.

Someone was sent to the generals who were far away on the frontier, and one of them sent a pair of them, and a detailed instruction manual was attached.

He gave the telescope a very ancient mythological name, clairvoyance.

That's a good thing, especially for a commander who leads a battle. When they got it, they were all ecstatic.

With clairvoyance, when fighting, as long as you choose a high terrain, you can look at the overall situation and make correct judgments anytime and anywhere.

In normal times, it can also be used to observe the enemy's situation, prevent sneak attacks, and get the opponent's deployment and work reports without much effort, which is simply amazing.

As for the compass, it is produced in many ways, because there are so many industries that can use it, such as spies for the army, guides for caravans, exploration of ore veins and roads, and so on.

With them, the forces of the whole country were united, a few tall and sturdy ships were built, and the most experienced sailors and captains were selected.

Embark on exploratory voyages, draw charts as you go, and spend heavily on finding experienced sailors along the way, opening up several relatively safe waterways.

The Maritime Silk Road created in the Song and Ming dynasties was presented hundreds of thousands of years in advance.

As a modern person, he understands the importance of the sea very well, and whoever can become a strong man on the sea is equivalent to becoming the hegemon of the world.

But he doesn't want to leave everything to chance, so it's important to carve out safe lanes.

As long as you can reach the South China Sea and then develop the Strait of Malacca, you can choke the throat of the sea lane, and from here, whether it is to the Indian Ocean or the Pacific Ocean, it is very convenient.

Further, if the Strait of Malacca can be incorporated into the territory of Dahan and used as a springboard, it will be able to reach almost every corner of the world in the future when the navigation technology matures.

So far, however, this has been a distant vision, and it is not possible to achieve it in the short term.

Not to mention a year or two, even if it is ten or eight years, it will only be able to complete part of the goal, and in his whole life, even the next generation, I hope to achieve maritime achievements.

Now, he only hopes to open a sea trade route, and the capacity to carry goods by sea is a hundred times stronger than that of land transportation, and the speed is also faster.

In a word, whether it is the land Silk Road or the maritime Silk Road, it is not easy, and a trip down is calculated in years.

This is due to the current backward means of transportation, and the only possible way to speed up ships with current technology is to develop steamships powered by steam engines.

But he had only seen simple graphics in textbooks, and it was very difficult to make it, so he could only have the same idea as gunpowder, and give a general direction for the craftsmen to explore on their own.

Of course, he will try to provide guidance and requirements as much as possible, hoping to make them avoid detours.

The era of the steam engine was the first period of great development of the world's industrial revolution and the foundation of modern scientific and technological civilization.

Fueled by the agrarian society, the direct development of industrial civilization, there are many hidden dangers, especially without a theoretical basis to support, whether it can continue in the future, it is difficult to say.

He pretended to have limited knowledge of basic physics and chemistry taught by God, and due to his age, his memory was skewed, and he could only recall some of the most common knowledge points.

There was no advanced professional knowledge involved, so he was worried that the people of Dahan would not understand it and would not be able to accept it.

Therefore, the language expression should be as simple and easy to understand as possible, and only after the theoretical knowledge is fully rooted in the hearts of the people, can their thinking mode be completely changed.

More professionals will emerge in the future, laying a solid foundation for Dahan's industrial development.

In the past year, he has been immersed in the thrill of new inventions, constantly developing new projects, but his foundation is too weak, and he is very self-aware.

He knew that basically his knowledge reserve was almost empty, and it was difficult to make any more dazzling inventions.

So next, his main task is to transform the Han people ideologically.

In order to avoid a direct conflict with Confucianism, it was necessary to separate the two disciplines under different names.

The training school run by the Jingzhou Mu Dong class among the local poor people inspired him to spend a lot of energy convincing the scholars and doctors to accept Gezhixue.

It is better to re-train the ordinary people directly in a blank sheet of paper, that is, to learn the needs of handicrafts, as long as they are successful, the state will arrange to work in the workshop in the future.

In this way, since the scholars and doctors felt that they were superior to others and rejected Gezhixue in their hearts, they simply stripped themselves from that class.

Anyway, he printed tens of thousands of copies of the study and distributed them all over the country at will, so that if someone is interested in comparison, he can study and research on his own.

I hope that ten years later, the seeds he sowed will be able to harvest a little and gather talents for the development of Dahan industry.

He still understands the truth that if you want to hurry, you can't reach it, and if you want to develop industry, you can't rush it, and just relying on him to carry some small inventions can't play a decisive role.

At most, it can only arouse the interest of people of insight, and the future still depends on the collective wisdom.

The summer passed quickly, Liu Zhi was still busy and fulfilled, and he also took the time to direct the craftsmen to make the first pair of crystal lens glasses for the Empress Dowager Yun Ming.

It was given to her as a gift, and the Empress Dowager Yun loved to read by nature, and used to study under the dim candle all year round, but as a result, she became short-sighted.

Now with the help of glasses, her eyes are immediately clear, which makes her very happy, and she wears them around like a child to show off.

At this moment, many princes and ministers were envious, and they all ran cheekily to Liu Zhi directly to beg for it.

Liu Zhi didn't bother to deal with it, so let them pay for it themselves to find the Ministry of Internal Affairs to buy it, anyway, it won't be long before this technology will be passed out, so it is better to take the opportunity to make a small profit first and enrich their private treasury.

After the Mid-Autumn Festival, for him, there is another big event this year, in September, he will be twenty years old.

This in ancient times would mark adulthood and a solemn coronation ceremony, even though he was already an adult at heart.

And the profession of the emperor is the most precocious, basically the teenage ministers will treat you as an adult, and they will be happy to fight with you in all kinds of wits and courage.

However, the emperor's coming-of-age ceremony is still a major event celebrated by the whole country, and the clan will hold the highest ceremony of the dynasty for him.

The crown ceremony of the emperor of the Han Dynasty is called the Canadian dollar service, since the Han Hui Emperor performed the crown ceremony, announced the "pardon the world", and opened the rules of the emperor's crown ceremony and amnesty the world.

When Emperor Zhao of the Han Dynasty was crowned, he not only rewarded him greatly, but also reduced taxes and celebrated the whole world.

Moreover, Emperor Zhao of the Han Dynasty added a yuan suit, in order to distinguish it from the crown ceremony of his subordinates, and show the extraordinariness of the emperor, and specially wrote a crown speech, which was the beginning of another crown for later emperors.

It can be seen that the grandeur of the emperor's crown ceremony, if according to the ancient Zhou ceremony, the emperor cannot be in charge of the government before the crown ceremony.

At that time, Qin Shi Huang was twenty-two years old before he began to take charge of the government, and the scholars of the two Han Dynasty also strictly abided by this etiquette.

Basically, men who are not crowned are not eligible for entry.

There was a story recorded in the school, Zhou Fang was a sixteen-year-old Shijun official. The ancestor patrolled Runan, summoned the rafters to test the scriptures, and saw Zhou Fang's "special recitation", and wanted to worship as a guard.

And because Zhou Fang had not yet performed the crown salute, he directly rejected this good opportunity that others couldn't ask for.

However, Liu Zhi's situation is special, after Liang Ji's death, the Empress Dowager Liang was disheartened and took the initiative to return to him, and the Empress Dowager Yun had no ambition to hang the curtain.

It's impossible to get a minister to disgust yourself, so everyone acquiesced to him being pro-government.

It's just a situation now, and the Zongzheng Mansion came early to ask for instructions, whether it will be held according to the old practice, or if there are any new requirements.

This matter is related to the whole country, and it is impossible for Liu Zhi to decide privately, so he convened all the ministers to discuss, and the secretary province and the Zhongshu province, the Hanlin Academy, the six Shangshu, and so on, all participated.

One of the most critical questions is whether to exempt from taxation, and if so, for a few more years.

Others, such as amnesty for the whole world, universal celebrations, lavish rewards, and so on, are not a problem.

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