Cuihan said that the land is dangerous, and the two capitals are strong.

The frost peak is straight to the road, and the glacier meanders around the city.

The ancient wood is jagged, and the cold ape is intermittent.

The crown and cover come and go, and the wind and dust are frightened.

Talking about the first horse, the pseudo-dawn pre-rooster crows.

Abandon the ambition and seal the mud to bear the ambition.

Don't be really popular, An is well-known.

The author of this poem is Li Shimin, who is known as Mingjun, when he wrote the poem, he had just completed the pacification of Wang Shichong and Dou Jiande's two major separatist forces in one fell swoop, and took Luoyang and Shandong Zhudi into his pocket.

The title of the poem is "Into Tongguan"

For a long time, Chang'an and Luoyang were known as the two capitals of the east and west, and the grain output of the Guanzhong Plain was not enough to support the vast area centered in Chang'an, and sometimes even the emperor had to go out of the customs to Luoyang to live temporarily, because of the lack of grain.

This problem actually appeared in the pre-Sui Dynasty, for this reason, the famous second-generation emperor Yang Guang, who was a loser, thought of a move that would benefit future generations, but would harm the present generation, and build a Grand Canal.

The Sui Canal, roughly from Guangling, that is, Yangzhou, through Qionggou to Huaishui, and then by the Yongji Canal to communicate Huaishui and the Yellow River, to Luoyang, and then through the Yellow River into Guanzhong, through a short section of Guangtong Canal, to Chang'an.

This huge project, in fact, also includes a long section from the Yellow River across Henan and Hebei to Youzhou, called Yongji Canal, which seems to be a bit of a south-to-north water diversion in later generations, and the purpose of building it is to conquer Goryeo.

It is a pity that the Grand Canal consumed too much manpower of the Sui Dynasty, causing beacons everywhere, and eventually became a major cause of the burial of this huge empire, but this canal solved the problems of the Tang people to a large extent, without abusing the people's power, so that the Tang Dynasty, which rose from his corpse, has continued to this day.

The peaceful and prosperous era that lasted for more than 40 years, especially after Tianbao, the further development of water conservancy, and the prosperity of Hexi and Longyou as a supplement to the Guanzhong Plain, also greatly alleviated the food problem.

Today's Grand Canal, in addition to grain ships, is a merchant ship from the south of the Yangtze River, and countless commodities converge in this way to the two capitals, turning Chang'an City into a super city with extremely rich commodities, and it is also its most glorious period in history.

Ironically, the Yongji Canal, an artificial waterway from Luoyang to Youzhou, was also a natural passage for the rebels to move south.

In fact, from Luoyang to Chang'an, there will be a blank in the waterway, the Yellow River is near Sanmenxia, abruptly rising, forming a pillar, it is not easy for the boat to travel, so, since ancient times, an ancient road connects Guanzhong and Henan, this is the Kunhan Road in Li Shimin's poem.

This ancient road from Hangu through the mountain to Tongguan, its eastern section is called the mountain road, the mountain is located in the east of Sanmenxia, is a mountain range that lies across the bank of the Yellow River, the northeast direction, like a natural barrier, isolated Guanzhong and Shandong, only a mountain road through it, becomes the only channel.

Seeing it with his own eyes, Liu Ji understood why the rebels only sent an army of 20,000 people to attack Tongguan, which is known as a natural danger, because the big team can't pass at all, Ge Shuhan doesn't need to fight at all, there are 200,000 people, each person picks up a stone, just block the entire wall, and 10,000 people are too much.

"Lord, here."

Chen Jin ran up the hill quickly and squatted beside Liu Ji.

"How many?" Liu Ji stared down with his eyes and asked without looking back.

"One hundred sergeants, three hundred strong people, one hundred and fifty carts."

So much? Liu Ji glanced back at Tian Qianzhen, who replied with a calm face: "In the past, there were one hundred vehicles, and a certain person was responsible for escorting, and there should be at least three hundred sergeants. ”

"Do you think you can beat it?"

Tian Qianzhen glanced at the situation nearby, and finally nodded.

Their location is a mountain forest in the Kuoshan Mountain, surrounded by mountains, below is a narrow mountain road, not far from the Yellow River, on the opposite bank is the remnants of Zhongtiao Mountain, here is the nearest city, the county seat of Shaanxi, there are at least more than 100 miles, so there is no need to worry about alarming the government.

As an important place in Gyeonggi, there is no possibility of bandits in this area, perhaps it is this reason that the escort team chose to pass through during the day, and after waiting for less than a quarter of an hour, there was movement on the mountain road below.

"It's Zhang Zhongzhi."

Seeing the leading general, Tian Qianzhen snorted, although Liu Ji had no impression of this name, but what could make Tian Qianzhen remind him was definitely not a good one, he raised the Fuyuan crossbow in his hand, pulled up the Wangshan on his head, and put the figure on horseback under the mountain into it.

Daozheng Fang Anfu, Ji Wen sat on a cushion with a gloomy face, since he became friends with An Lushan, he had developed a habit of Hu people, sitting cross-legged.

looked at Yang Guozhong, who was talking and laughing with the county lord.

"Da Lang's lady has been dead for many years, it's not good to be so empty, a certain family talked to the lady last time, and wanted to find a suitable daughter from the Yang family, but the supreme opened his mouth, let you enter Beijing, and then discuss, it seems, is to recruit horses."

An Lushan laughed: "The doctor said that it was funny, how can there be a princess to be married under the knees of the Supreme." ”

"The princess doesn't, but the emperor is not necessarily, the supreme young daughter, fourteen years old, is the time to go out of the cabinet, I heard that she was born with a beautiful face and a good match."

"Oh, that's the case?"

An Lushan glanced at Ji Wen suspiciously, and found that he was a little distracted, so he couldn't help but ask in surprise: "Lao Ji, is it?" ”

Ji Wen was called by him, and then he came back to his senses: "This is true, but I heard that this girl has a vision, and she has always been disliked by the Supreme, and now she doesn't even have a title, I'm afraid it's not her." ”

Yang Guozhong smiled and quipped: "Ji Laoqi, what do you think about so engrossedly, is there any hope for promotion?" ”

Ji Wen was just about to speak, but An Lushan took the lead: "Doctor Yang, speaking of which, how did those people sent into Beijing disappear by a certain family, and there is no news from your people?" ”

"How can the county king say this, Mr. Yan said goodbye without saying goodbye, a certain family is still trying to ask what is going on, isn't it what the county king meant?"

The two of them looked at each other like this, An Lushan squinted, his face was fat, Yang Guozhong was also silent, his mind was turning, and after a while, they all turned their heads and separated at the same time.

"The king of the county promised a certain family to collect evidence of his crimes, I don't know if there is anything next?"

Yang Guozhong held the wine cup, but did not pour it in his mouth.

"Some harvests, people are held in the camp outside the city, what do you want to use?"

"Is there a correspondence?"

"Li Xiangguo's handwriting, a certain family wasted a lot of effort to get it."

Yang Guozhong was overjoyed: "When will it be delivered?" ”

An Lushan glanced at Ji Wen, and the latter said, "Luo Xizao's matter, but it was from the doctor's instructions?" ”

Yang Guozhong nodded without hesitation: "Naturally, he is Li Xiang's henchman, and if he is taken, a large number of people can be brought out." ”

"Why do you want to lead so-and-so?"

"Could there be such a thing?"

Yang Guozhong showed a surprised expression, thought for a while and said: "The person who is in charge of the trial is the person from Dali Temple, not a certain relationship, that Yuan Zai, who has always been good friends with the prince, can't say, there is any misunderstanding, Qilang don't worry, a certain family will go back and ask, but the people from the constitutional department are not very good at dealing with us, and they may make a stumbling block from it." ”

An Lushan waved his hand and said: "Since it is a misunderstanding, there is Dr. Lao who is maneuvering around it, and what he promised you, a certain family will definitely do it, how about it?" ”

Yang Guozhong knew that this was his condition, so he was not annoyed, and smiled and bowed his hand.

"Well said, well said."