Yesterday and today we were studying the topography of Longyou, and we can't send out things that we haven't understood just because we want to hurry up and update them, and it is necessary to clarify some of the words of some irresponsible "historians," otherwise it will be a big joke.

Sima Guang once described the grand occasion of the Silk Road and the prosperity of the Longyou region with envy in the "Zizhi Tongjian", and he even once said: "There is no one who is as rich as Longyou in the world."

Uh, but how to say it, it's a bit like I'm in a village with twist pain, and then count the per capita income of our village is hundreds of millions, so I'm a billionaire.

The "Longyou" in Sima Guang's mouth is the "Da Longyou" that is not used much in the historical circles (ancient and modern). Including the "Long" in the idiom "Delong Wangshu", it is not the same thing as what Sima Guang said.

The Longyou of the Tang Dynasty was not the "Longright" in Sima Guang's mouth, otherwise there would not have been a "Longyou Jiedu Envoy" and a "Hexi Jiedu Envoy".

Because the influence of "Zizhi Tongjian" is too great, and the concept of "Da Longyou" quoted in modern materials comes from here. All the sources are here, and you don't need to look at Baidu Encyclopedia.

During the period of Tang Ruizong, Longyou and Hexi, the Tang court had already divided them into two completely independent geographical units, because they were too different from each other.

Why do I say that Longyou in a broad sense has no meaning in history and geography, which will be talked about later.

In fact, the traditional Longyou (except for Sima Guang, I have not seen any historian after the Tang Dynasty who compared Hexi and Longyou) refers to the area west of Longshan, south of Lanzhou, and east of Qinghai Lake, bounded by the Yellow River.

An important reason why Lanzhou later became the largest important town in the northwest was because it was located at the junction of Hexi and Longyou.

A fact that cannot be ignored is that between Hexi and Longyou, the roads are rugged, there are no waterways, and the difference between the customs and the overall gap between the rich and the poor is very large, and it is completely impossible to talk about it together.

Including the current Gansu Province, many people say that they can see the landform of the whole of China in Gansu, why is this so, because this is only an administrative division and not a geographical plate.

To put it simply, Gansu Province is artificially "pinched" together. For example, Hanzhong City has been the periphery of Shu since ancient times in terms of geographical plates, and the customs and customs are not much different from Shu, but it is completely unrelated to "Longyou", but it is divided into Shaanxi Province.

To put it bluntly, it's just an administrative division. Far away, so Longyou, which has geographical significance, is it poor or rich?

I think many people understand the answer, not to mention other periods, as far as the Tang Dynasty is concerned, Longyou is not only very poor, but also ridiculously poor. Not only is there more than 100,000 troops stationed, but it is simply unable to sustain itself, and most of the grain must be continuously imported from Guanzhong. The local chief executives are all desperate tuntian, which makes the already harsh environment here even worse.

In particular, in the struggle between the Tang Dynasty and Tubo, the land potential and environmental carrying capacity of Longyou continued to decline. Since then, there has been no time to recover again, not the worst, only worse, so that by the time of New China, it has become the most difficult place in the country to turn over economically, and the natural disasters are particularly serious.

If my information is correct, the grain output in Longyou is less than one-tenth of that of Hubei Province, which is smaller than it!

Many literary works have mentioned the troubles of Longyou veterans in the Tang Dynasty, if Longyou is really rich, why do these people make trouble?

The answer is obvious, history books can talk nonsense at a certain node, but a large number of historical materials corroborate things, that is, ironclad historical facts.

What does it mean to say so much, that is, just look at the plot written in my book, I have all researched and won't write scribble. In the Tang Dynasty, Longyou was poor mountains and bad waters, and the rich was the Hexi Corridor, which was not within the scope of Longyou, and the Silk Road did not go to Longyou.

It was updated at about two o'clock in the afternoon, and the mines planted by Sheng Tang were almost about to explode.