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"Chi road rail, road wide fifty steps, three zhang and tree, thick outside, tree with green pine. Pen Fun Pavilion www.biquge.info"

This sentence recorded in history is to describe the "galloping road" and "rail road" built by the defense of the country in the Warring States Period, the monarch came down to issue a new decree, and the cars and wheels of the defense of the country are also very peculiar, until the sleeper track was discovered, the people before and after have not paid attention to and did not think of the "car on the same track" of the defense of the country, which has any other mysteries, and can only be vaguely summarized by the ruler to facilitate the consolidation of the ruling empire.

It wasn't until the discovery of the "rail road" that everything was understood, and this characteristic of "car on the same track" made the carriage not only run on the ordinary road, but also enter the "rail road" at any time, which is also a feature that the current railway does not have.

Fifty steps wide, thick outside.

It stands to reason that Wei Zheng did not need to order the road to be built so wide, in fact, it was because of the "galloping road" and the "double-track rail road" running side by side, and the carriage could go on the "rail road" at any time if necessary, and it could also gallop with heavy objects at any time, and it could also "gallop" or even wild roads from the "rail road" at any time.

There is no doubt that once the construction of the "rail road" and "gallop road" is completed, the cost of war for the defense of the country will drop sharply compared to the other countries.

Although the country is in the Central Plains, the territory of the country is still full of forests, timber and other resources, which provides a sufficient resource base for the "track", which means that local materials can be taken anytime and anywhere, although it is easy to damage, but the same reason is also easy to repair.

Attack and defense, protection and destruction are inherently twin brothers, and this is a battle with no end.

Wei Zheng didn't have to worry about man-made sabotage, or even the enemy's deliberate destruction of the orbit and indirectly sabotage his own logistics supply front.

Because the defense has cavalry battle formations, as far as the armies of the current nations are concerned, no country has a strong ability to react and support the defense country.

Not to mention that the tracks, gallops, and post stations all complement each other, and they can be supported at the speed of thunder as soon as there is a change, and the success chance of the enemy's artificially damaged destruction is really slim, and even if it is damaged, it can be quickly repaired, which is of little significance.

The only tricky thing is the threat from nature, which is inevitable, even if Wei Zheng has advanced consciousness, but there is no better way than to raise an additional group of people to maintain it.

Although it raised an extra group of people, it was still very cost-effective, after all, like the Chu State, it would cost three stones of grain to transport the grain to the front-line troops, so that even if the war was won, it was a loss.

After the country has a track, on average, the consumption ratio only needs to spend half a stone of grain to send to the front-line troops thousands of miles away, and the huge resources saved only need to be set aside a small part to support a huge group of people who maintain the track.

What could be more cost-effective?

Time flies, Wei Zheng is building roads in the Central Plains, and when the rhino head is waiting for the army, a war of annihilation in the northwest of the world is about to break out.

The land of Longxi, Yiqu.

"The scenery of Yiqu, the rivers and mountains are picturesque, hehe......" a rather mighty horse team drove into Longxi, straight to the core boundary of Yiqu, along the Jingshui all the way to the north, Su Dai who rode a horse looked around the scenery leisurely.

"Sir is my honored guest of Yiqu people, Wei Jun is so generous, it is really admirable!" The parallel Yiqu instructor laughed loudly, and couldn't help but point to the convoy behind him, the carriage was loaded with the most lacking precision equipment blades in Yiqu, military weapons and farm tools, Yiqu people are grassland people, the biggest shortcoming of the nomadic clan is the backwardness of production tools, almost no ability to produce equipment by themselves, even the Leiyun are sold by merchants in the Central Plains.

Even so, it is becoming more and more difficult to get these urgently needed materials, without him, Zhao, Qin, and Yan are all starting to build the Great Wall in the north one after another, not only to resist the nuisance of the wolf clan in northern Xinjiang, once the Great Wall is completed, it will be difficult for merchants in the Central Plains to enter northern Xinjiang to engage in "transnational trade".

The Central Plains countries, especially the Zhao State and the Qin State, are ordered to prohibit the sale of weapons and their important tools to the foreign tribes in the north, and the countless prohibitions themselves show that the repeated prohibitions are not stopped, and the merchants are profit-seeking nature, although the wolf tribes in the north are thousands of tribes, but they have gradually formed a tacit agreement, they often harass and plunder the border cities of the vassal states of Qin, Zhao and Yan, but they are very friendly to the merchants of the Central Plains in the north.

Obviously, the wolf clan also knows that if they want to obtain the good things of the Central Plains, they need these profit-seeking Central Plains merchants to plunder them, and how can there be Central Plains people to come to the North to do business in the future?

The land of Longxi is located in the upper reaches of Weishui, the largest tributary of the Yellow River, that is, the Longxi Basin of the Weishui Basin in southern Gansu.

If Weishui is a blessing to generations of old Qin people, then Jingshui, a tributary north of Weishui, is the mother river of the Yiqu people, and the existence of Jingshui makes the grassland in the north of Longxi fertile and beautiful.

However, this is the case, the Yiqu people live in the north of Weishui, a Yiqu country hangs over the head of the Qin State, and it has been a major problem for the Qin State for hundreds of years, and it has disturbed the northern border of the Qin State from time to time, until the Qin Mugong era dominated Longxi, and the Yiqu people have converged a lot.

Due to geographical factors, Yiqu is creeping in the northwest of Longxi, which can naturally form the overwhelming trend of Mount Tai to the Qin State, and the Yiqu is not extinguished, and it has always been a major problem for the Qin State. King Yingsi of Qin is like Zhao Yong, King of Zhao Wuling, and he can't wait to destroy the Zhongshan Kingdom that threatens Zhao State in one day.

Qin has the trouble of Yiqu, Zhao has the trouble of Zhongshan, the two countries are the same, Yiqu and Zhongshan are also countries established by foreign peoples, and they can also threaten the core of Qin and Zhao.

For the kings of Qin and Zhao, not destroying their kingdom can be described as uncomfortable as a fish in the throat.

"Dare to ask Your Excellency, is the capital of Yiqu ahead?" After half a month of travel, Su Dai looked at the city in front of him, although the scale was not as good as the city of a county in the Central Plains, but it was already considered magnificent in the land of Longxi, after all, this was a city surrounded by the grassland people.

The Yiqu people have also established a country, and compared with other grassland tribes in northern Xinjiang, the Yiqu people are advanced.

"Exactly!" The instructor of the Yiqu said with a smile: "Mr. followed me into the city to meet the king." ”

"Okay!"

As soon as he arrived at the gate of Yiqu City, a team of men and horses galloped out, and the instructor of Yiqu saw that the leader hurriedly dismounted, and clasped his fist to his chest with one hand: "King! ”

This is the King of Yiqu? Su Dai looked at the leader with a little surprise, wearing an animal skin coat, not too old or young, but also quite strong, while thinking, he also dismounted, facing the King of Yiqu with the Central Plains etiquette, and said: "Su Dai has seen the King of Yiqu!" ”

"Haha, this king is polite!" The King of Yiqu on horseback returned the salute with a fist, but his eyes looked at the huge carriage team behind him, and he wondered: "This is ......"

"Yiqu King Rongyu, this is a little heart of my monarch to the king, in the next trip is to order my lord to tell the king on behalf of my king, Yiqu people's help to defend the country is unforgettable." Su Dai gave up.

"Well said!" Yiqu laughed loudly, and when he learned what the goods of the carriage were, he was even more smiling, and immediately dismounted and personally invited Su Dai into the capital.

Almost at the same time, Chen Jing in the north of Jingshui, south of Ganquan Mountain, the border city of the Qin State in Yunyang City, 160,000 Qin troops have already left Yunyang in the mighty north, the spies of the Yiqu people saw a glance at the Qin army that seemed to have no end in sight, and they were so frightened that they galloped north all the way and galloped away in a hurry for eight hundred miles.

The army of tens of thousands of Qin countries went north out of Yunyang, and above Yunyang is the Yiqu country.

……

(Ps: The reason why it is said that Ying Si wears a jade crown of Pingding bead curtain is a little green, is according to the "Historical Records. The Biography of the Xiongnu records: "When King Qin Zhao, King Yiqu Rong and Empress Dowager Xuan were in turmoil and had two sons. In 272 BC, "Empress Dowager Xuan booby-trapped the King of Yiqu in Ganquan Palace")