Li Yi clicked his tongue again:

“I really doubt whether you are his disciples. Have you really forgotten that he also has a name called Cruel and Cruel Xiao Wenhe?”

 Fu Qian and Luo Xian had that word popping up in their hearts again:

 Cao!

 The following are free of charge:

 Eh, let’s talk about some historical common sense.

 Previous Chapter Many book friends have a question: Why can’t copper transporters use the Yellow River waterway?

 Let me just say it briefly.

In fact, for more than a thousand years from the Pre-Qin Dynasty to the Han Dynasty, and even after the Han Dynasty, and even until the fall of the Tang Dynasty, the ruling class never gave up using the waterway from Chang'an to Luoyang, but they never succeeded.

 In other words, large-scale utilization has never been successful. At best, it can only handle a small number of small boats that are light and easy to turn around.

Why?

 Because this section of the waterway is really dangerous.

 There are not only exposed reefs and submerged reefs in many places, but also large water level differences. For example, the Sanmenxia, ​​Xiaolangdi and other power stations that were relatively famous in the early days after the founding of the People's Republic of China are located in this area.

 Why is it famous?

 It is because their construction was very difficult based on the technical conditions at the time. We relied on the spirit of not being afraid of difficulties and worked hard to build them.

During the Warring States Period, the Qin State blocked Hangu Pass, and the six countries in the Kanto region could only stare. It was not that they did not expect to take a boat up the Yellow River from the edge of Hangu Pass, but that they could not sail the boat at all.

As for why it was impossible to cross the mountains south of Hangu Pass at that time, this is another question. Since it has nothing to do with the Yellow River, I will not go into it.

 Let’s continue talking about the Yellow River.

 During the Western Han Dynasty, as the population of Guanzhong continued to increase, by the time of Emperor Wu of the Han Dynasty, Guanzhong's grain could no longer supply the Guanzhong population.

So the rulers began to vigorously develop Longyou and Liangzhou, and even had to transport grain from Hanzhong, but there was no way to transport grain from Guandong to Guanzhong.

In order to solve this problem, the Western Han Dynasty also vigorously developed this section of the waterway. However, until the fall of the powerful Western Han Dynasty, only a small amount of waterway was opened to allow small boats to pass.

 So Longyou and Liangzhou in the Western Han Dynasty were actually very prosperous.

Even in the early Eastern Han Dynasty, when Qiang and barbarians did not disrupt Liangzhou on a large scale, for most of the time, the price of food in Liangzhou was actually lower than the national average price. Did it subvert the imagination of many people?

 The Tang Dynasty after the Han Dynasty also encountered the same problem.

Yang Guang mobilized the whole country to dig through the canals in the north and south and connected them into the Grand Canal, but this was only able to deliver grain to Luoyang.

Note, that is to say, water transportation in the lower reaches of the Yellow River east of Luoyang can be used, and it was used very early.

But the waterway from Luoyang to Chang'an is still virgin land, uh, at least half of it, no more.

At the time of Emperor Gaozong and Wu Zetian of the Tang Dynasty, the population in Guanzhong increased and the food pressure was too great. The emperor had to often go to Luoyang with all the officials to eat.

As time goes by, Luoyang became the de facto capital of the Tang Dynasty.

I remember that this matter was mentioned in the history books. But why this happened, it seems not mentioned in the books, so everyone just knows and doesn’t know why.

I thought that many people knew the knowledge about the Yellow River waterway from Chang'an to Luoyang. I didn't expect it to be a blind spot in knowledge. It was indeed my omission. I'm sorry.
Chapter completed!