I saw three big characters clearly written on the thin Canglan Waters Book: Tianyuan County!
What is Tianyuan County?
The meaning of heaven is that it is high. It turns out that it is naturally a plain.
Tianyuan County is called Tianyuan because its terrain is flat but surprisingly high.
That's why it got this name.
If it were Gu Beichuan's words, wouldn't this be a plateau?
It's just that how the Daqian map was made is obviously different from what was taught in geography classes in later generations, so it was not named Plateau, but Tianyuan.
To put it bluntly, this is almost the county with the lowest population in Daqian.
Why?
Bad!
The conditions here are really bad!
If anyone is sent to be an official here, it will be an obvious relegation.
Moreover, he was still relegated to his grandma's house. As long as nothing serious happened in the court to usurp the throne, he probably wouldn't even think about returning to the capital in this life.
Just find a coffin for yourself in advance and die of old age in this remote place in the countryside.
Why are the conditions so bad?
Because it’s windy! Strong winds all year round! It's so big that it's so unusual that it's called a demon!
Under such strong winds, one can imagine the condition of the soil in Tianyuan County!
Not to mention that it is as fertile as normal land, even half of it is far less than that.
The locals don't know how to plant more vegetation to prevent evil winds.
Just think that God is angry and brings this storm to punish the world.
It is also thanks to the civil and military skills of the current saint that he is so majestic.
He also had absolute control over the court, so that they did not dare to talk softly.
Otherwise, those public officials or censors would probably have to criticize Emperor Renxuan, saying that the emperor had lost his moral character and caused disasters from the sky, which instead caused the people to suffer. This is all the emperor's fault!
Whether it was the emperor's fault or not, Gu Beichuan probably didn't care.
He only cares about the soil of Tianyuan County!
Given the terrain of Tianyuan County, under the blow of such evil winds all year round, the soil is probably going to turn into sand!
But, what does this have to do with the Canglan flood?
Why did Gu Beichuan get so excited?
Just because this Tianyuan County also belongs to the Canglan River Basin!
However, in comparison, it is slightly upstream, and the relatively rich Canglan County is slightly downstream, but the two are not far apart.
With the speculation that the soil in Tianyuan County might become desertified, Gu Beichuan became bolder and began to speculate wildly on the cause of the Canglan flood.
Since the soil in Tianyuan County can be turned into sand, it will naturally rise up when blown by the evil wind.
When you reach the surface of the Canglan River, when you encounter water vapor, it will inevitably condense into lumps and fall into it.
Over time, will the sediment in the river increase day by day?
Will the river bed water level also rise?
Gu Beichuan was thinking about it, and suddenly he remembered that the local chronicles of Canglan County seemed to record the rapid and turbid river water during the flood, which seemed to fall from the sky, like a punishment from heaven, which made people fearful and did not dare to resist. Just run away.
This corroborates his guess!
Thinking of this, Gu Beichuan put aside the Canglan Waters Volume and found the thick pile of local chronicles.
I started rummaging around, and finally found the original local chronicles of Tianyuan and Canglan counties, and began to study them carefully.
A few hours later, the increasingly sleepy Gu Beichuan raised his head, his eyes sparkling!
He found it!
The local chronicles of Cheonwon County record that the local soil has indeed been affected by wind and sand, saying that it is rough and hard in texture and in the shape of fine particles. When the evil wind comes, it can be said to fly all over the sky and go straight into the mouth and nose.
As a result, people in Tianyuan County need to cover their faces with gauze to prevent wind and sand whenever they go out.
Gu Beichuan was completely excited. Isn't this characteristic just like the wind and sand?
Now that the fact of soil erosion in Tianyuan County has been confirmed, the next step is to verify whether the Tianshang River appears in Canglan County!
Sure enough, a moment later, Gu Beichuan found more detailed relevant records in the local chronicles of Canglan County.
It was mentioned above that although the soil in Canglan County is fertile, the area near the Canglan River is even more fertile.
But even so, year after year, no one is seen planting crops in the area near the Canglan River.
The reason is that once a flood occurs, the embankments will burst.
The turbid yellow water of the river splashed down from the sky, making it impossible for people to avoid it.
If crops are planted in the area near the Canglan River, regardless of the people, the crops will definitely die.
Such records undoubtedly verified Gu Beichuan's guess about the Tianshang River.
If this is the case, he will have something in mind!
If it were other floods, he really might not know how to deal with it, but if it was the Tianshang River, it would really hit him!
It is true that I, Gu Beichuan, will never die!
Why is Tianshangjiang so easy to manage?
In fact, it is not easy to manage. On the contrary, it is more cumbersome and requires more time to operate.
However, Gu Beichuan already had all the corresponding procedures in mind.
Why?
Because he has experienced this before!
Not just him, I'm afraid most of the people in China will experience it!
How is this so-called river in the sky similar to the situation encountered by the Yellow River, the mother river of China?
The Loess Plateau in the middle and upper reaches of the Yellow River suffers from serious water and soil erosion, bringing sediment to the lower reaches, forming a Tianshang River!
Even in later generations when scientific education has been very developed, such river problems are still quite difficult.
In meteorological news, the Yellow River is a frequent visitor, and it even appears in junior high school geography books!
This has led to the broad masses of the people having more or less opinions on how to manage the Yellow River.
Even if I can no longer say it out loud, I still know the six-character mantra of returning farmland to forest and grass.
And how similar is the situation of the Tianshang River today to the Tianshang River of the Yellow River in later generations?
However, the Loess Plateau is vast and soil erosion is more serious.
More sediment was brought down, and the phenomenon of Tianshang River became more serious.
Later, it affected several provinces in the south.
As for the Canglan River’s Tianshangjiang phenomenon, it’s a bit overwhelming to talk about.
After all, Tianyuan County is only a county, and there are not as many places with soil erosion as there are on the Loess Plateau.
Therefore, the impact was relatively small. Even during the flood season with continuous heavy rains, it only caused floods in one county of Canglan County.
As for several other surrounding counties, it was only slightly affected at best and could not be called a disaster.
Of course, the impact is not big now.
But things like soil erosion will become more and more serious as time goes by.
Gu Beichuan had never studied meteorology, so he didn't know where the evil wind in Tianyuan County came from.
He only knew that if he allowed this evil wind to turn the land of Tianyuan County into sand, he would be in trouble.
The horrific disaster of the Yellow River in the sky in the past and future generations may be repeated in Daqian!
Thinking of this, Gu Beichuan couldn't help but break into a cold sweat even though he was feeling sleepy.
