Xiao Chen and Dr. Liu continued to go into the cave. In addition to seeing the coffins, a breath blew inside, making people feel even colder.

This cave is not bottomed out at all. Obviously, it is really likely to be formed naturally, some of which are similar to karst landform.

But it doesn't look like it.

Coming out of the cave, Xiao Chen took Dr. Liu and they continued to check other caves. There were coffins in smaller caves, but there were not so many.

When I saw the sixth cave, I suddenly found a new discovery and saw some wooden sticks left by stool on the ground.

When they go up the mountain or down the mountain, or even when many rural people defecate, they don't wipe their hips with toilet paper. They use some cut bamboo chips or even some wooden sticks.

When Xiao Chen was in Xiaojia village, he also used bamboo chips to go to the toilet. I'm afraid he won't realize the sour feeling of scraping in the past until he has used it.

Now looking at these sticks, it seems that it should be Yang Laowu who left here before.

Dr. Liu, they squat down, wear gloves and look through a magnifying glass. It's really those.

"Dr. Xiao, this is really left by human stool."

In that case, Yang Laowu and his colleagues should have stayed in the cave for some time. When Xiao Chen and Dr. Liu went inside, Dr. Liu had taken out the bag to collect the wooden sticks just now, and would take them back to the laboratory for research.

Go inside again. Xiao Chen sees rotten mattresses, which are more likely to be brought up by Yang Laowu.

"Brother Yang, do you see if these are the mats that your villagers like to use?"

These mats are actually cold mats, woven from a kind of plant planted by the villagers themselves. In addition to these rotten mats, Xiao Chen also saw several cups.

"Do you know him?" Xiao Chen looked at brother Yang and said.

"Dr. Xiao, yes, they used it." Young brother Yang said with fear.

These are the things Yang Laowu used. They are relics. He dare not touch them. Just now, Dr. Liu and his colleagues went back to study with the wooden stick used by Yang Laowu to scrape their stools. He felt a little sick.

Xiao Chen found that a cup was filled with water, which may not have been drunk. He didn't know if the water was mountain spring water from where?

"Dr. Xiao, these should also be taken back for research." Dr. Liu said.

"Then take it with you."

These are of no use to Xiao Chen, or even to the research of traditional Chinese medicine. He continues to go inside. Xiao Chen hears the sound of water dripping. It should be mountain spring water.

Sure enough, after walking about ten meters away, Xiao Chen saw the mountain spring water again. The mountain spring water dripped from the cave and then collected to the small cave. The mountain spring water at the cave entrance didn't know where to flow. However, if you put a cup there, it won't take a long time to fill it.

"Do you dare to drink?"

When Dr. Wu and Dr. Liu heard this, they were afraid to drink it. I'm afraid these raw water are more problematic than those mountain springs outside.

Dr. Liu took a bag again, put some mountain spring water back for research, took out a pen to write, and then pasted the paper there. Then he won't mess up when he goes back.

Besides these, Xiao Chen hasn't found anything suspicious yet.

As for the dry food, rice, millet and even corn cobs brought by Yang Laowu, they should have finished long ago, but where do they make a fire?

Xiao Chen checked carefully again. Soon, he really found the traces left by the fire in the cave, and there were the remaining wood there.

"They should have started the fire here." Xiao Chen said.

Looking at the torch carefully, I found that there were still some ashes left on the ground, and even some rice grains that fell here.

These don't need to be taken back for research. There is no research effect in it.

After coming out of the cave, Xiao Chen took Dr. Wu and Dr. Liu. They continued to check other caves and found that there were coffins inside. However, they did not see any traces left by Yang Laowu or others. It seemed that there were all those spider webs inside. It was likely that no one had entered such a place for hundreds of years.

Now young brother Yang is numb because of fear. He doesn't know where this place is. He just always heard that this is the devil's kiln and forbidden area. No one can come in, otherwise he will die.

If Yang Laowu really came here and went back, they would die.

So now that he has come in, isn't he going to die when he goes back?

After coming out of the cave, Xiao Chen found that it was more than five o'clock in the morning. After a busy night, Xiao Chen felt that the harvest was still very good.

When returning, Xiao Chen returned to the largest cave again.

"Dr. Wu, do you want to take these bats and bat poop back to study?"

"Yes, of course, these are of research value."

Xiao Chen caught some bats and put them in the bag brought by Dr. Liu. For fear of being bitten by these bats, he had to kill them first.

The rest of the bat poop also brought some back.

Tonight, or this time, the mission is temporarily over.

Xiao Chen guessed that the source of the spread of the plague is probably here, but what is it? Xiao Chen doesn't know.

When he came out of the cave, brother Yang broke out cold sweat many times, which made his clothes wet and dry. Now when he left here, he finally released his breath.

He didn't have to look back. He always felt something behind him was looking at him all the time.

Quickly leave here and go back to the tree cutting place. The two large fires are still there, but they are almost extinguished. After Xiao Chen goes to add some firewood to burn, Xiao Chen says, "everyone, rest here now. Let's go back at seven in the morning."

Xiao Chen sat on the wooden pier. So did Dr. Wu and Dr. Liu. Only brother Yang was afraid to surround the fire and kept asking for the blessing of his ancestors.

At more than seven o'clock in the morning, after seeing the sunlight above his head, Xiao Chen completely covered and destroyed the two piles of exergy soil to prevent sparks. At that time, he will burn the forest, which may cause a fire, which is very troublesome.

After doing all this, Xiao Chen, Dr. Wu and Dr. Liu are ready to go back to Yang Jiazhai.

When he asked brother yang to lead the way, in fact, he didn't know where he was. He came to this place for the first time in more than 20 years and saw it with his own eyes. He thought that what his grandfather and those people in the village heard might be false. Unexpectedly, what he saw now is true.

Now we can only go back to Yang's village according to the way Yang Laowu walked and the traces left. Xiao Chen took the firewood cutting knife, and brother Yang also took the knife to open the way in front.