Chapter 1472: :verification

Ye Chen discovered that, in addition to the transparent eyeless fish that the pupils caught, there were also some eyeless fish that looked dark on the outside, all of the size of a palm.
Since these elementary school students dare to catch these fishes and eat them, they must be non-toxic. It's just that these pupils don't know what the proper names of these two fishes are.
Ye Chen accompanied these elementary school students to the underground river in the cave for all morning fishing. Basically, there are more than ten fish in each bucket, which can be eaten for a few days.
It was almost eleven o’clock at lunch, Ye Chen and the pupils came out of the cave. The pupils in the village told him that they found the largest underground river in the village. They didn’t know how deep it was, but they often could A baby-like cry was heard inside.
Ye Chen knew that there might be baby fish inside, that is, those giant salamanders. However, the wild baby fish is a national protected animal, and the villagers feel terrified by the call of this giant salamander, and it is impossible to catch them.
Besides, no one knows how deep the underground river is, and no one knows whether there are other animals in it.
Someone once caught a chicken and fished there, and in the end the chicken was eaten by the black animal. So, basically, no villager dared to go inside.
And these underground rivers may have been formed in tens of thousands or even hundreds of thousands of years. They were formed in millions of years. In that era, except for the kind of animals that have now disappeared from the ground, they are still living underground. Under the river.
The underground river here may also be related to the sea. Because a long time ago, this piece may still be the ocean.
When the primary school students in the village came out of the underground cavern, Ye Chen was still a little uncomfortable when the sunlight on his head shone, and felt that the sunlight was a bit dazzling.
When they slowly adapt, they have already reached the entrance of the village. Now the primary school students carry their buckets back, and then prepare to kill the fish, dry the fish, or deep-fry the dried fish. The village head Liu Dazhuang is waiting for Ye Chen to come back for lunch.
"Doctor Ye, where were you just now?" Liu Dazhuang asked.
"Go fishing with those elementary school students in the village." Ye Chen said.
Now Fu Xiaobing and the four interns have a good rest, especially the four interns’ gratitude to Ye Chen. Ye Chen asked the village elder’s wife to boil the soup for them last night. Otherwise, today It is possible to catch a cold.
When I ate at the village chief Liu Dazhuang, when Ye Chen asked about the eyeless fish in the underground river, Liu Dazhuang didn’t know what the real names of the fish were. Anyway, the fish are non-toxic, less thorny, and very delicious. They are dried. Or it can be eaten for a long time if it is fried and dried.
The income of the villagers here is not high, and it is impossible to eat pork every day, so the most eaten are the eyeless fish in the underground river.
Moreover, in the eyes of the villagers, those eyeless fish are inexhaustible, and as long as they want to eat, they can catch or fish. However, if they were caught and sold, not many villagers would have this idea, because even if they were caught, it would be difficult to transport them for sale.
When Ye Chen and them finished their lunch, the one who drove the motorcycle to the county town to ask for instructions and asked the professor and expert of Carey College to come over. He hasn't come yet, so he should be on the way.
At around two o'clock in the afternoon, the young man who drove out on a motorcycle and the village cadres finally invited two professors from the Department of Chemistry at Carey College.
When the two came over, they brought related equipment. Because I came here in a small car, it rained heavily last night, so driving is not fast, but safety is the priority.
By the time they arrived in the village, it was already more than two o'clock in the afternoon. Ye Chen and Fu Xiaobing met the two professors and Liu Dazhuang introduced the situation of Liu Shuijin's new house.
Regarding the situation of the accident in Liu Shuijin's new house, the two professors had long known it, but they did not know whether it was related to the density of the gas.
Since I'm here now, let's take them to check the situation there.
Those villagers heard that the experts had come again, and many villagers followed. Now Ye Chen and Fu Xiaobing, following the two professors, started measuring in the new house with a professional equipment carbon dioxide meter.
Soon, a professor discovered that the concentration of the volume fraction of carbon dioxide in the air was less than 2.5%.
This data is still normal, but compared with what was measured in the village just now, it is 0.5% higher here, which shows that the density of carbon dioxide in the air here is higher than that outside.
When the other professor recorded it, and then randomly entered a room for measurement, he found that the density inside was more than 2.5%.
The density is so high that there is a real problem.
However, with this dense density, nothing will happen in a short time, but it will only increase the number of breaths.
Then I went up to the second floor. When measuring in the room where Liu Shuijin’s parents lived, I quickly discovered that the volume of carbon dioxide in the room was between 4% and 100% when the door was closed. Between five.
There is already a problem with the density of this carbon dioxide. In this case, it will not only speed up the breathing of a normal person, but even cause local irritation symptoms.
When the two chemistry professors took the carbon dioxide meter to other rooms to measure, they found that the problem was the same, and the density was similar.
If that is the case, Ye Chen's explanation last night was basically explained clearly and verified.
"The air in these rooms is not circulating and the density of carbon dioxide is too high. Even if there is no fire for heating, it would be uncomfortable to stay in them for a long time," said a professor.
To make the measured data more accurate, a professor asked the villagers to fetch the brazier, set it on fire as in winter, and then closed the doors and windows to keep warm.
After waiting for about half an hour, when the two professors were holding the measuring instrument to measure the air density of carbon dioxide, they were surprised that the density of carbon dioxide was already between 8%.
In this area, it is a very dangerous area and often makes people have difficulty breathing.
If the fire is used to keep warm all night, in fact, it is almost the same as suicide by burning charcoal. For example, if the concentration of carbon dioxide is between 8% and 10%, people will have difficulty breathing for a short time, and then they will become unconscious.
In addition, people experience headaches, dizziness, inattention, heart palpitations, coma, vomiting, twitching of the limbs, incontinence and so on.
The most serious is the direct occurrence of suffocation, the heart stops beating, and direct death.
Obviously, the parents of brother Liu Shuijin died in bed before and after, naturally, it was caused by absorbing too dense carbon dioxide after a long time.
As for Liu Shuitong, he inhaled it many times. Although he did not die at the beginning, he kept showing symptoms such as convulsions.
There is no need to explain now. The situation here is basically related to this matter. In general, it is good for Ye Chen, and it has a lot to do with the Feng Shui here.
Originally, this kind of place is not suitable for building such a well-sealed bungalow. Even if it is to be built, it is best to leave more ventilation holes there to maintain air circulation.