After the plan was set, Su Yu immediately found a few people and gave them some instructions, and also told several of them about the natural disaster and asked them to give some suggestions.

Su Yu knew that she had done a lot of things based on her previous gaming experience, but the events that had happened in the past few days had made her a little reluctant to continue to rely too much on her gaming experience.

She can refer to the memories of the past, but she can't fully believe that in such a situation, in addition to making her own plans, she also needs to refer to the opinions of others, so she chooses the people who have the most experience and knowledge in the territory.

First of all, there must be Meke, his identity is destined to know no less things, not to mention that he himself has said that he has been to many territories for cooking, including many territories that are experiencing natural disasters, so Su Yu needs to listen to him carefully.

Then there is Ed, he is a librarian, not necessarily rich, but definitely a lot of experience, especially after the library in the territory is expanded step by step, in order to broaden his knowledge, but also in order to better manage the library, so he has read every book in the library.

In addition to the books in the library that Su Yu bought from merchants, the monsters dropped, and the treasure chests that came out, there were also the residents of the territory and others who collected them and finally sold them to the library.

At present, there are more than 5,000 books in the library, although it is not as good as the library in reality, but for a territory with a population of only 1,000, it is already a lot.

Of course, this doesn't matter, the important thing is that Su Yu feels that there may be clues related to natural disasters in the library...... To put it more bluntly, the system may tell you some information related to natural disasters in the form of books.

So Su Yu asked Ed to carefully check the books in the library after he went back, and then pick out all the books related to 'natural disasters' and 'nature'.

It's certainly a difficult job for others, but it's not a difficult task for a librarian who is in charge of the library, it just takes some time.

Then there are the people of the bounty group recruited by the territory before, and the bounty group is destined to run around because of its professional characteristics, and it has been to many territories, and it is natural to have a wide range of knowledge.

Similar to the bounty regiment are the caravans......

After looking for people in this circle, Su Yu really got some clues.

The first clue was given by Odd, who was the head of the bounty group, who said that he had heard a story from a ranger when he was leading a team on a mission, and the main character of that story was a territory that had been destroyed by a natural disaster.

"According to the man, this polar winter was normal on the first day, and it is because of this that they let their guard down......"

"From the second day onwards, the daylight hours were gradually shortened, from the first day by one hour, to the sixth day by two hours, which is exactly ten days, that is, from the tenth day there was no longer any sun."

Su Yu did a little math, and it was true.

As it stands, sunrise at five in the morning and sunset at seven in the evening, which is fourteen hours of daylight.

The first four days were shortened by one hour a day, and the next five days were shortened by two hours a day, which is exactly fourteen hours.

It seemed that they had only entered the eternal night from the tenth day, but in the first nine days, because the daylight hours were gradually shortening every day, they could only use eighty hours of daytime, that is, less than three and a half days.

And that's not all.

"In addition to the gradual shortening of the daylight hours, the temperature in the territory is also plummeting, the day before the Polar Night Winter was still normal, but when it comes, it will drop by five degrees in succession in the first two days, and from the third day, it will drop by ten degrees per day......"

"The reason why the ranger knows so much is because he has passed through the territory of the suffering, and the territory at that time can no longer be called a territory, because it has become a deserted ruin, and he rummaged through the ruins out of a sense of exploration, and finally found a diary in a place that appeared to be a residence."

The Ranger is telling the story of the owner of the diary and the inhabitants of the original realm who died as a result of the Winter of the Polar Night.

Because there was no daylight at the end of the polar night, they could not go out, and the weather was so cold that they did not dare to go out, so the owner of the diary could only write a diary as a means of recreation......

It's just that he didn't survive in the end, because the diary stayed on the twentieth day and there was no information, and on the nineteenth day, the master left similar last words, which he himself understood that they couldn't hold on.

Su Yu could guess that the ranger who found the diary might have exaggerated in order to attract attention, but most of the content should be true.

However, she did find something strange in Odd's account.

"Are you sure the Ranger is the diary found in the ruins?" Su Yu asked seriously.

Although Odd didn't understand why he asked, he still gave an affirmative answer after careful recollection.

"Yes, the Ranger also made it a point to mention that the people who traveled with him found a lot of good things from the ruins." It is said to be a good thing, but in fact it is just a 'legacy' left by the aborigines of this territory.

Su Yu's doubts increased in her heart, but she was not sure yet, so she was not ready to say it for the time being, so as not to scare others.

The second one who gave the clue was a member of a caravan, whose family used to make a fortune as a traveling merchant, but it was not until her parents' generation did not continue for some reason.

However, although her parents were not interested in traveling merchants, she loved them very much, otherwise she would not have joined the caravan as an adult.

Because of this love, she has had the habit of reading the travelogues left by her ancestors since she was a child, and several of them mention natural disasters.

She also seemed to feel that Su Yu attached great importance to this matter, and she was afraid that her description would not be accurate enough, so she directly handed over all the travelogues that she thought might be useful to Su Yu.

After Su Yu thanked and gave the corresponding reward, he quickly read these travelogues, and then wrote down the important parts of them, and then returned them...... After all, it is something handed down from people's ancestors, although it looks like it has no practical value, but it is also an heirloom in a sense, and she naturally has to be careful with it.

It can only be said that it is worthy of a family that has been a traveling merchant for several generations, and the types of natural disasters mentioned in these travelogues are as many as hundreds of them, and even one-third of them have been experienced by the other party.

Since you have experienced it yourself and can survive, you must have a more thorough understanding of natural disasters and how to deal with them.