Su Yu's first idea when he obtained this skill book was to immediately send it to the skill hall for rubbing and for the territory residents to learn.

And she did, and after sorting out the clutter, she took the skill book called 'The Law of Vientiane' to the mission hall.

There are not many materials for rubbing Vientiane, among which the most valuable material is the bright moon shell, which can also be known by looking at the name, this is a thing on the bottom of the sea, and it can also be regarded as a specialty of the mermaid family.

Bright moon shell is a kind of nail-sized shell, which can be used as medicine after grinding into powder, and several prescriptions related to bright moon shells are to improve attributes, so bright moon shells are also a rare good thing.

But obviously, Su Yu, who just came back from the mermaid clan and brought back countless specialties, has this thing.

Although the mermaid clan didn't give too much, there were also more than a hundred small shells, and it took two bright moon shells to rub a skill book, and fifty copies could be made here.

"There should be ...... on the other side" It wasn't just Su Yu who got the mermaid gift, the others also got a little bit of something, although there wasn't necessarily a bright moon shell, but Su Yu still went to ask.

In the end, she bought more than fifty Mingyue Bei from other people's hands at the price of one gold coin, and changed hands to more than twenty skill books.

Su Yu looked at the eighty skill books and felt that there was a little less, but soon, another batch of Mingyuebei took the initiative to send them to the door.

"I heard that Lord Su is buying Mingyuebei, I still have more than a hundred here, I don't know if you still want it?" Ning Shi's initiative to come to the door made Su Yu a little surprised, but she really needed it, so she was not polite, and paid more than a hundred gold coins to buy Mingyue Bei at the price of other people, and then the number of skill books increased by fifty.

One hundred and thirty skill books seems like a lot, but compared to the number of people in the territory of more than 1,000, less than one-fifth of the people can get the skill books.

Su Yu thought about it and decided not to sell this skill book to the outside world, but only to sell it to his own people, and the condition for the purchase was money plus territorial contributions.

Considering that the price of synthetic materials is not particularly expensive, the cost of a skill book is less than five gold coins, and two of the gold coins are Mingyuebei's money, so the price of the skill book is divided into two types.

The first is 10 gold coins plus 1,000 territory contributions.

Second, two gold coins plus 3,000 territory contributions.

The first method is for residents who have money, but have not joined the territory for a long time, and have not made a lot of contributions, and the second method is for residents who do not have a lot of money, but have joined the territory for a long time and have made many contributions to the territory.

A thousand contribution points is not much, not to mention people like Dolly Doya, who joined the territory in the first place, even if it is a magpie who has only joined the territory not long ago, now her contribution value has more than eight hundred, and this is still when she is busy training people and has not deliberately accumulated.

Otherwise, if a normal person does tasks every day, he can save a thousand contributions in a month, and if he happens to encounter a natural disaster or siege battle, the speed of obtaining contribution points will be doubled.

Especially in the previous week, in order to save natural disaster resources, there were a lot of tasks with high contribution value in the mission hall, so I really don't have to worry about no one changing them.

After setting the price, Su Yu also sent an announcement to inform everyone by the way, otherwise, with the current situation, everyone is probably thinking about treasure hunting to make money, and I am afraid that there is no time to come to the skill hall.

But as soon as this announcement was made, it attracted not only the inhabitants of the territory, but also many travelers and wanderers who did not belong to it.

Although it was already dark when Su Yu made the announcement, perhaps because of today's abundant harvest, everyone couldn't sleep with excitement, so it was already time to go home, and most of them were still on the street outside.

It just so happened that in order to cope with the polar winter, Su Yu doubled the lighting facilities in the entire territory, which not only ensured the quality of the lighting range, but also used backup lighting when a certain part of the lighting facilities was damaged.

At this moment, the sunset territory was as bright as day, so even though they knew that today was the beginning of the natural disaster, they did not feel the slightest discomfort.

The streets were so lively that Su Yu's announcement was seen by many people the moment it was posted.

Prior to this, the content of the announcement was to stop at Su Yu's notification of the natural disaster, and everyone had seen this announcement, so when they found that there were still people paying attention to the announcement and discussing it, more and more people also gathered around.

While they were surrounding, people who already had a sense of urgency hurriedly went to the skill hall, for fear that if they were a little late, they would not be able to buy the Vientiane Law in time.

When the first batch of people excitedly bought the law of Vientiane, the second group of people who came because of the announcement also came to the door of the skill hall.

In less than half an hour, less than a third of the nearly one hundred and fifty copies of the Vientiane Law remained, that is, a hundred people had already purchased the skill book.

Su Yu guessed that this would be the case, so she didn't leave the skill hall, and after they finished buying, she would look at the information of the person who bought the skill book and count their situation.

By the time the skill book was completely sold out, it would be an hour later.

According to the statistical results, more than 80% of the people who bought the skill book were combatants, and about 7 adults chose to buy the skill book using the first method, which is the method that consumes more gold.

It's not that many of them don't have three thousand contributions, but they all know that in the territory, there are many functions of contribution points, in addition to exchanging skill books, there are also high-level equipment, props, materials, medicines...... These can only be redeemed with contribution points.

So when they have enough money, they will definitely prefer to buy with money.

Su Yu didn't care which method they used to buy them, she set two methods just to set a threshold, so that people who had just joined the territory for a short time would not be able to buy these skill books, otherwise if they bought the skill books by luck, some of the people who had joined the territory for two or three months did not have the skill books, which would be a little too uncomfortable.

Moreover, the loyalty of these people who have only joined the territory for a long time is not high, and Su Yu is also afraid that they will run away after buying the skill book, so it will be her who loses.

After all, the market price of this skill book is definitely more than ten gold coins, even if it is doubled several times, someone will buy it, and if it is placed in the auction house of the big territory, the price will only go up to the next level.

"These people...... Looks like we'll have to go to Lake and ask him to arrange this. Su Yu looked at the list of skill books that he had bought, and found that there were some familiar names that were not in it.