There were twenty-four runes that I learned from the high elves at first. After years of development, the runes published by runes in the Arcane Empire era had reached thirty-six. It is said that some runes were mastered by the great arcanes. There are rumors that the number of runes has actually reached more than seventy.

Each rune has unique power. During the Arcane Empire, people even developed rune stones and used a special method to make a rune into a gem. Then, several rune gems are combined according to certain formulas to make a powerful piece of equipment.

However, this kind of rune gem making has been lost. Most of the rune equipment circulating now are products of the Arcane Empire period, and some are remade by rune gems excavated from the remains.

The puzzle lock is a spell sequence composed of these large number of runes in a special order. At first, the puzzle locks of humans were not large, usually only in a range of 300 to 500 meters. The puzzle locks created by high elves at the same time can already cover a city.

By the time of the Arcane Empire, human mystery locks developed rapidly and became the standard configuration of the Wizard Tower and the floating city.

After putting away the important magic book "Principles and Production of Mystery Locks", Su Lun took out the last remaining architectural drawings of wonders.

[Miscellaneous Architecture Drawings: Heroic Spirit Tower; after use, you can build a Heroic Spirit Tower of Wonderful Architecture.]

[Hero Spirit Tower: The construction requires a pre-building Arc de Triomphe. This is a tall tower built with iron and blood. It is the final destination of a warrior. Owning this building can improve the martial spirit in the territory. Within the 30 miles of the city and its surroundings, the probability of a newborn having a warrior qualification is increased by 10%. At the same time, the morale of all soldiers in Zhenbei City +20, the souls of the fallen soldiers will enter the Arc de Triomphe, and the probability of the war soul being promoted to a hero spirit +20. Martial spirit +35, indestructible +37, firm will +35, unyielding war soul +28, with a space for the temple of heroes, the space can grow.]

The Hero Spirit Tower is not bad. It just so happens to be equipped with the Arc de Triomphe. After the Hero Spirit Tower, the chance of the War Soul upgrade to a Hero Spirit will increase a lot. However, if you want to build this building, you still need a War Soul Stone, and there are still two. Su Lun doesn’t have a War Soul Stone in his hand now and cannot be built for the time being.

It is not easy to obtain the Battle Soul Stone. Su Lun issued a task to the caravan to acquire the Battle Soul Stone. Now there are hundreds of caravans from all over the mainland in Zhenbei City. As long as the price is enough, there will always be someone who can get it.

After packing up the things, the atmosphere of the banquet in the palace was hot. Su Lun came to the banquet in a good mood to say hello to everyone. After staying here for more than ten minutes, he left the banquet.

After the establishment of the Principality, Sulun's life did not change much. After all, this was just a small country with more than 100,000 people, and there was no need to appoint various ministers. The caravans from various countries who came to participate in the founding ceremony of the Principality of Beifeng also began to leave with various goods produced in Zhenbeicheng.

Because of the celebration, Sulun specially explained that the quota this month doubled. Now the most popular supplies in Zhenbei City have changed from sugar to toilet paper. This kind of toilet paper is not only popular with the nobles, but even the civilians will buy it. Of course, the nobles buy high-end toilet paper with exquisitely made, soft and white paper, and even sprayed perfume. The civilians buy the yellow straw paper of average quality.

After seeing the toilet paper selling well, Su Lun immediately thought of soap, perfume and other products. But just as he was about to make it, he suddenly realized that he didn't know how to make soap. After all, he was not an engineering student in his previous life and had never understood the method of making soap.

So we can only let the craftsmen study it slowly. As for perfume, this thing is very simple. You only need to dissolve the spices with alcohol and it is a simple perfume. It is also very difficult to make perfume. The first step is to find high-purity alcohol.

The alcohol content in this world is average, such as ale wine, and the alcohol content is similar to that of beer. It is not easy to count alcohol at a high level. Currently, the highest alcohol content is the vodka brewed in Zhenbeicheng, and the alcohol content is only between thirty and forty.

If you want to obtain high-purity alcohol, you need to distillate alcohol. However, the sales of vodka in Zhenbeicheng are very good now. Sulun does not intend to use vodka so luxuriously to make perfume. So he just made a few bottles for him to give to him, Hathaway and the others.

The National Day lasted for seven days, and from this year on this year, this time of year will be National Day. After the grand festival, everything returned to normal. The civilians in Zhenbeicheng began their busy lives again.

Merchants seized the time to buy supplies and make money. Every day, long caravans came or left, and the army began training and clearing tasks again.

Sulun yawned and rubbed his head with a little soreness. The book "The Lock" involves too much knowledge. It is difficult for him to study it now. Fortunately, in addition to his talent as a erudite, Sulun's learning ability has been strengthened, which can speed up his learning efficiency. He is now learning "The Lock" while learning other wizard knowledge.

After moving his body for a while, Su Lun collected the books and materials, then got up and left the palace. Although he had become a grand duke, Su Lun still liked to wander around the city, which would make him more clear about the situation at the bottom of the city.

A lot of things happened during this period. Something happened in the southern waters during this period. A pirate ship discovered the legendary Treasure Island. It is said that the island is full of gold, silver and various gems. The ship was taken there by a storm. The pirates recorded the channel when they left. As a result, as soon as they returned to the coast, the pirates on the pirate ship had a fierce fighting.

In the end, as long as a few people escaped alive, the chart was obtained by the first mate of the pirate ship. The remaining pirates sold the news to other forces, and the result was that many forces started to fight. Of course, the northern wasteland was several thousand kilometers away from the southern waters, and it was several months after the news came here.

It is said that even the Queen of Red Dragon was alarmed. You should know that Red Dragon likes treasures very much. There are other news, such as a marquis in the Kingdom of Lorenza raised his flag to rebel and joined forces with another surrounding country to attack Lorenza. The Kingdom of Lorenza is now in a defensive state because of the heavy losses in the orc invasion last year.

Although these news are the latest news from Zhenbeicheng, the closest one is half a month ago. Su Lun listened for a while and went to the military camp. He planned to formally recruit Jinyiwei and build a Zhenbeicheng intelligence network with Feiying.

In the military camp, General Su Lun gathered the soldiers in the military camp and did not have much requirements to recruit Jinyiwei. He could reach the first level or even lower level. As long as the army in Zhenbeicheng was a regular army, the general level was at the second level, and a few of them reached the third level.

Su Lun selected five hundred people in the military camp and then spent a thousand gold Nar to transfer them to the Jinyiwei.

[Embroidered Uniform Guard: Special troops, good at spying on intelligence, collecting information, transmitting intelligence, assassination and other abilities, with skills: camouflage, reconnaissance]

After the five hundred soldiers selected by Su Lun were transformed into Jinyiwei, the strength did not change much, but there were more additional information collection, knowledge and two skills to spy on intelligence. Next, Su Lun built a house near the palace as the office location of Jinyiwei.

The Jinyiwei was also officially named the Zhenzhushi, and the first batch of twenty flying eagles were allocated to them. After these Jinyiwei learned how to feed the flying eagles, Su Lun began to send them to other countries around the North Wind Principality to establish intelligence bases.

The five hundred Jinyiwei recruited by Su Lun, in groups of three to four people, each group carried some funds or commodities and then pretended to be a caravan or wandering mercenaries to leave Zhenbei City. These Jinyiwei will establish strongholds in some large cities.

These strongholds may be some taverns, hotels, and secretly collect local information. Once there is a major event or something important, they will pass the news back.

Part of the funds are obtained by them on their own operations, while the other part is funded by the Principality of North Feng. After all, the intelligence industry is very expensive. How can three or five people in a city collect and transmit information? Of course, they need to recruit some peripheral personnel. Why do these peripheral personnel collect information for you? Of course, it is because of money. Could it be that I love to generate electricity?

If Su Lun wants to maintain a huge intelligence network, the money spent is naturally very high. Of course, Su Lun can also sell intelligence to the outside world, but this kind of operation can easily expose himself, and Su Lun hasn't figured out how to operate it.

The number of flying eagles cultivated in the Eagle's Nest is not large. Except for some of these flying eagles left for the reconnaissance camp, all of them were left to the Jinyiwei for use. Originally, Su Lun planned to let these flying eagles reproduce themselves and then cultivate them. In this way, all of the flying eagles born in the Eagle's Nest are better domesticated. However, the establishment of the Jinyiwei requires a large number of flying eagles. If you want to obtain a large number of flying eagles in a short time, you can only capture the wild eagles for training.

Sulun arranged nearly one hundred Jinyiwei squads, which would integrate into various large and medium-sized towns in various ways, and then set up intelligence bases in the towns. Each intelligence base would almost require three to five flying eagles. In this way, the Eagle's Nest would need to cultivate hundreds of iFlytek eagles.

Of course, these are only temporary. If the Jinyiwei's stronghold continues to increase, the number of flying eagles will also need to increase significantly. Fortunately, Su Lun did not want to eat a fat man in one go, and the establishment of an intelligence network cannot be completed overnight.
Chapter completed!