After the breakthrough in papermaking technology, Su Lun began to arrange people to copy books at the first time. If the school in Zhenbei city wants to expand, it needs a large number of books. As for printing, the quality of paper is fairly good, and printing is not good at all.

Poor paper quality, printing ink and so on are all problems, and can only be copied by hand. However, this is not difficult for those scholars. After all, when there is no printing, they use hand copying.

After the paper was made in the paper workshop, except for half of the paper sent to the Lord's castle, all the rest was sent to the college for them to copy books with this paper. In the past, books used parchment. Generally, books can't write many words, and they are very thick and expensive. Now they are replaced with paper. The contents of more than a dozen parchments can be easily handled in one book.

The quantity of the first batch of paper is not large, but after the first batch is made, the second batch of paper will be made faster, and the quantity will increase several times. Most of the papers of the Lord's castle are sent to the city hall office for recording and reporting data, as well as various official documents.

After seeing a cart of yellow paper delivered to the college in zhenbeicheng, the scholars were very curious about the paper, and soon a steward came forward to hand it over.

"Morey, this is the paper that the Lord asked us to send. You can confirm the quantity, and then move these papers back." a middle-aged man came over and said.

"Is this the paper the LORD said?" the man named Morey went over and picked up a piece of paper. "Lord, let's use this paper to copy books."

"However, this paper is much thinner than parchment. If you can write on this paper, the content recorded in a book is several times that of parchment."

"I don't think this kind of paper is easy to save."

"Who knows, can we refuse the Lord's order?"

"Ladies and gentlemen, this is what the LORD sent to the academy to let us copy books. Let's do it. Let's move the paper down first." Morey said to the people.

With the efforts of many students in the college, these papers were soon sent to an empty room.

"The paper is easy to get damp. Pay attention to keep it dry when storing."

After the paper was distributed, those scholars soon began to use paper to copy books. When they used it, they found the convenience of paper. Although compared with parchment, these papers are easy to damage and other shortcomings, they are still widely praised by those scholars.

Suellen was holding a newly completed manuscript book, which had been bound according to his requirements instead of parchment rolls. The surface of the book is a little rough and looks very simple, but it is much more convenient than the previous sheepskin roll.

"Someone!" Suellen put down his book and shouted outside the door.

"Sir, what can I do for you?" a bodyguard said respectfully.

"Tell Morey that books will be made in this style in the future. These books can only be read in the college. They can't be taken out or damaged without my permission. Violators will be severely punished. In addition, inform Morey to establish a library in the academy to store all kinds of books."

"Yes." the bodyguard was ordered to leave.

With the emergence of paper, the education of the college has become easier. In the past, only teachers had books, but now almost every student has one. Similarly, with books to record, the learning speed of these students has also improved a lot.

After dealing with the school affairs, Suellen began to pay attention to other things.

The number of slaves in the territory has been increasing for some time, especially after the harpy came, because Suellen asked Alex to train with the harpy and attack the goblins, dog headed men, jackals and Orc tribes on the wasteland.

Zhenbei city received a large number of slaves. The orcs thought that a great war had suffered heavy casualties. Even the orc chief died, and the remaining Orc tribes fell apart. The half disabled Centaur tribes attacked by the orcs also joined Zhenbei city.

The two overlords on the wasteland suddenly disappeared, and Zhenbei city was unable to occupy the territory of the original orcs and centaurs, resulting in a short vacuum on the wasteland. Small and medium-sized tribes in other areas of the northern wasteland began to migrate here and fill the area again.

For these small and medium-sized tribes, this is a once-in-a-lifetime opportunity. In order to compete for the living space of these grasslands and plains, there have been several tribal wars on the wasteland during this period. Su Lun released the troops in the north of the town and the newly added harpy banshee, let them train and upgrade, and catch slaves by the way.

With the military activities of Zhenbei City, the number of slaves in the territory soon exceeded 10000, of which the goblins and dog headed people were the largest, followed by jackals and orcs. When eliminating various tribes, the army of Zhenbei city also suffered losses, and there was a great chance that some spell casters would be born among those medium-sized tribes.

The most likely to appear is the dog headed Warlock. After several losses, the army of Zhenbei city will eliminate the warlock or shaman as soon as they find them. As the number of slaves and refugees increased, the food consumption in the north of the town also increased.

Fortunately, the food reserve in the north town is sufficient, and there is a harvest altar, so there is no need to worry about food shortage.

After a year's development, Zhenbei city has gained a great reputation in the northern provinces. There should be many bankrupt farmers. Small businessmen began to come spontaneously. The population of Zhenbei city grew rapidly, removing all slaves. There are Jinghu city and Centaur city. The population of Zhenbei city has more than 22000 people.

Sufficient labor resources enabled Su Lun to speed up the construction of the Arc de Triomphe. Before, about half of the slaves were transferred from Zhenbei city because of the establishment of Jinghu city and Centaur city. Now, after a large number of arrests, the number of slaves has increased sharply, and the construction of the whole Zhenbei City has been accelerated.

The Arc de Triomphe, as the second wonder building in the north of the town, was built to celebrate sulun's, which is naturally the top priority. The white marble is mined from the LOTAS mountains and then transported to the north town with camel animals. It will not be used until it is polished by a mason.

Pieces of marble were polished smooth and then dragged by slaves. Each piece of marble weighed one ton, and some even more than three tons. The middle of the three door openings of the Arc de Triomphe is ten meters wide, and the small door openings on both sides are six meters wide.

The Arc de Triomphe spans Xuri street, the main street in the north of the town. After Xuri Street passes through the Arc de Triomphe, it is the central square. The door opening is 19 meters high. After the construction of the Arc de Triomphe, it will be a tall building second only to the harvest altar in the north of the town.

The inner wall of the door opening is carved with lifelike reliefs. These reliefs are the pictures of Su Lun defeating the enemy. From the first jackals, to the later ice pterosaurs, to trolls, orcs and so on, many battles. After some artistic processing by those carving masters, even Su Lun has a feeling of watching epic.

With sufficient manpower, the construction of the Arc de Triomphe is very fast, and Karina and grace need to use various spells to help the construction. The arched door opening of the Arc de Triomphe is very heavy, and it is very difficult to carry it as a whole only relying on the current human technology, but it is only a little trouble for wizards.

With the joint efforts of two level-4 supernatural magicians, the marble weighing at least dozens of tons was successfully transported. After the capping, even if most of the construction of the Arc de Triomphe is completed, what carving craftsmen are needed to carve the marble.

After the placement of these marbles, Karina and grace also need to turn mud into stone to integrate the original marbles one by one into a whole. When the Arc de Triomphe is completed, it will be a whole.

After a lot of construction in the North Town, a group of skilled carving craftsmen have been trained. Su Lun specially found Hathaway and asked her to make some tools specially used to carve stones, which can carve marble more easily. With the addition of these tools, the decorative carving speed of the Arc de Triomphe is very fast.

After all the carvings were completed, the Arc de Triomphe was also equipped with hardening. Hardening was first used to build a floating city during the arcane empire. This spell effect is permanent. When cast, even a piece of wood will become as hard as steel.

It is said that the defense of those floating cities in the era of the arcane empire could resist the meteorite, the strongest spell of the prophecy system, and be unharmed. After the disappearance of the arcane Empire, later wizards always wanted to build a floating city, but they failed because of various reasons. The biggest problem is energy.

The powerful energy needed to raise a city. It is said that every floating city has a miser energy core to provide energy, but it is known that no wizard has found this kind of thing, and even the manufacturing technology of this miser energy core is unknown.

After the floating city could not be built, the Wizards retreated and built the wizard tower. Of course, some wizards built the floating tower. The whole body of these wizard towers was built with obsidian, and then added hardening, which was very hard.

In order not to damage the Arc de Triomphe, Su Lun also added hardening on it. This work is not small. Even Hathaway was caught by him to work together.

It took a few days to harden all parts of the Arc de Triomphe, but the last process of the Arc de Triomphe has not been completed.

Su Lun followed the stairs in the Arc de Triomphe into the interior of the Arc de Triomphe. There was a room inside the Arc de Triomphe, which was used to store the war soul stone. Su Lun takes the war soul stone from the storage space. The purple war soul stone looks very beautiful. When he comes to the altar in the center of the room, Su Lun takes a deep breath, and then puts the war soul stone on the base of the altar.