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"However, there are still a lot of unfathomable emotions lingering in my mind!" Liru rubbed her forehead, feeling a little distressed.

"If you don't understand, then don't think about it for now. Rest well first, I'll go find some water to drink. I'm really too thirsty!" Xuanyuan Mo tightly wrapped the blanket around Li Ruo and walked out.

"Do you want to drink it?" Liru nodded quickly. His food was too salty and he couldn't eat at all. He only ate a little tonight. Luckily, they also brought their own food, otherwise they would have starved.

Xuanyuan Mo found some tools from the room and went out directly. He had been gone for a long time before he finally came back. Li Ruo had already fallen asleep and was drowsy.

However, he still woke up the moment he entered the room.

"It's strange, I've looked for many places, but the water here is the same everywhere, it's hard to swallow!"

"Oh?" Li Ruo took it and took a sip, but still spat it out. It was really salty. When they ate in the evening, they had thought that it was because their taste was too strong. Now, it seemed that there was something wrong with the water.

"Could someone have done something to the water?" Xuanyuan Mo placed it aside and fell into deep thought.

"No way!" Liru hugged the blanket and sat up. He even indicated to Xuanyuan Mo that he should go in, because it was truly very cold outside at night.

Of course, Xuanyuan Mo was very willing. With a chuckle, he neatly slipped inside and even hugged Liru, saying that it would be more warm this way.

"From their expressions, we can tell that they're helpless against this kind of thing. It's just that they haven't had as big of a reaction as us because they've been eating and getting used to it for so many years!"

"Yes, I remember the village chief saying that because the geology is very strange, nothing can grow here. Could it be that this is actually related to the water quality here?"

"Water is the source of all living things. If the water quality is not good, then nothing can grow!" When Li Ruo recalled carefully, she had not found the root of the problem. Now, she finally had a clue.

She remembered from the information she had gathered at the time that this type of neck disease also occurred when people ate too much iodine. So, did everyone here turn out like this because of iodine as well?

There was no sea at all, but the only two or three dishes that could be found tonight actually contained traces of kelp. Liru also noticed that there were kelp in front of every household's doors. Could it be that what they usually sold was kelp as well?

Many questions remained, but Liru could feel the truth breaking out of the cocoon in his brain.

"Let's rest first!" After thinking for a while, he still couldn't come up with anything, so he could only suggest it.

"Tomorrow, the remaining people will be sent out to help the villagers build their houses, and we might have to make a trip outside!" However, she thought that Su Lin must know more about these things than she did. It seemed that she needed to invite them to come over.

The night passed without any dreams. Early the next morning, after Xuanyuan Mo had given the three of them their tasks, he left with the village chief. According to the village chief, they never put salt in their cooking.

There was a mountain behind the village, and the water source was there.

Looking from afar, the entire mountain was white, completely covered with snow. The water source was deep inside the mountain, and from the bottom of the mountain, there was an entrance that looked like it had been built by someone, and it was very spacious. Along the way, they could vaguely see some white granules, and after picking them up and tasting them, they seemed to be very salty, probably no different from salt, but the taste was very strange. It was different from salt.

Could it be that this place was full of iodized salt?

This thought was very scary. She didn't remember everything she read in the book, but she did remember that there was iodine in the salt, but the ingredients weren't too high. This … Was it the root cause of the Big Neck Disease?

As they went deeper into the cave, more and more white granules appeared on the roadside. When they reached the water source, they could see more and more white spots.

It was extremely shocking and hard to imagine.

He didn't need to drink to know that the water here was definitely stronger than the one at the foot of the mountain, but Li Ruo couldn't help but take a sip.

Her eyebrows furrowed. Not only was the water salty, it was also very astringent …

It was as if he was really drinking the unfiltered water.

With a flash of inspiration, Liru suddenly thought of the kelp that hung on the door of every household. "Village Head, why do you have kelp here?"

"Laminaria?" The village chief frowned, "Are you talking about the thing on our doorstep?"

"That's right, that's the one!"

"That's what we call life-saving grass, because our ancestors found them when there was nothing to eat!" The Village Head wore the beard of a tiger, it seemed like he was going to have another long talk.

"Hmm, I mean, where did you get those things!" In fact, she had no interest whatsoever in the affairs of their ancestors.

"There's something behind the mountain!" Afterwards, seeing Liruo's interest, the Village Chief brought the two of them through the water source and continued to walk deeper. When their line of sight started to brighten, they saw a boundless sea area covered in snow. The snowflakes did not cover the seawater, and the seawater was still sparse.

"Xuanyuan Mo, why is there a sea here?" Logically speaking, Xuanyuan should be located in the south and should be considered a relatively warm country. As for the sea, it should only exist at the borders.

Was it because of the earth's crust movement?

So not only did it trigger the volcanic eruption, it even caused the sea to emerge as well?

This was simply unbelievable.

However, there were many strange things in nature, and this was not the most unusual thing.

After coming down from the mountain, Liru had been rather absent-minded, because these people were all helpless. Even though they had found the exit, they were still unable to get out.

General Li personally led a group out to purchase a lot of food. The others had already started helping the villagers to tidy up and build their houses.

Cheng Ziheng had already gone out to further investigate the case and sent a letter to Su Lin. They should be here within ten days.

"Boss, the first victim's home is here!" Because they all had something to do, and naturally, Li Ruo couldn't be idle either.

Li Ruo nodded, and carefully looked at the house in front of her. The house looked like it had been in disrepair for a long time, it didn't look like it was inhabited.

"This dead person is called Er Wa, he is the Prefect's cousin. Ten years ago, before he died, he went to the mountains. Moreover, he is the closest person to the time of death!" Cheng Ziheng looked through all the files. The information of previous generations had been destroyed or lost, but except for this one ten years ago, the previous one had been sixty years ago. The symptoms of death were similar, and they had all been in this mountain before they died.

"Ten years ago, the Prefect was still the Prefect, right?" Liru had already strode in, and drew a rough circle in the position and place of the man who had died as Cheng Ziheng had told him.

Because there were no traces left, he could only restore the scene simply.

"That's right!" Cheng Ziheng nodded, "At that time, he was just a commoner living in the city with his cousin's family. The characteristics and general situation that this subordinate mentioned was the conclusion obtained after questioning the Prefect!" Li Ruo nodded and let Cheng Ziheng and the other two Dragon Team members imitate her.

"Bring me to the next one!" Other than the Prefect, not a single one of this person's relatives survived. In ten years, the neighbors all walked around, and in place of them, many people harbored terrifying feelings for those people in the forest. However, as long as they asked about Er Wa, not many people had any impression of him.

"The second victim was a servant of the magistrate at the end of the street. He died seven years ago, and on the day of his death, he went to the mountain, and when he came back, he announced that he saw a very scary person. After that, he went crazy, and by the time his family found out, he was already dead!"

"Did he say anything strange or did he do anything strange?" Lirael looked at the servant's wife, not sparing a single expression on her face.

"He was crazy ever since he came back. Where did he say anything?" Perhaps it was because the investigation had scared her, or perhaps it was because it was her fault and she didn't want to talk about it.

When Li Ruo asked this question, the woman was obviously dazed. The following reply was also a bit absent-minded.

"Are you sure? He didn't say anything at that time, nor did he do anything strange? " It was a very cruel thing to force the victim to remember and face the pain of the past, but there was no other way. This was her duty, so she would never be soft-hearted because of their expressions.

"He only said that he saw a lot of scary people. When he came back, his eyes were dull, but slowly, his mood became worse. And then, they started to cry and make a ruckus! " The young woman tilted her head as if she was recalling something …

"Then when did you discover that he had gone completely mad? When did he die? "

"This... It was too long ago, and I don't remember it very clearly. All I know is that he died in the kitchen when I found him! "

"Died in the kitchen?" "Why would someone who has already gone insane go to the kitchen?"

"I've already told you for too long, why are you so untactful? Even crazy people know they are hungry. Maybe they went to find something to eat? " The woman was already slightly angry, and her tone was full of reproach.

"Be careful of your words. The person in front of you, is currently …"

"Ruo Su, come back!" If it was Ruo Su's hero, she wouldn't tolerate anyone slandering her. However, when she heard those arrogant words, she couldn't hold it in anymore.

"Boss!" Ruo Su curled her lips. She was a bit dissatisfied with Liru's patience. She had been busy with other things and didn't follow him up the mountain. When she just heard that Liruo was here, she rushed over without stopping.