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After returning from Li Ying, Li Chongjiu returned to the Qianyang Palace to deal with government affairs.

On the side of Zhongshu Province, Yu Shinan and Zhang Xuansu, who were on duty, came together.

"Jiang Shan's ensemble invites Xu Yuanlang, Xu Yichou father and son will not die, just let the two of them serve the people." Li Chongjiu couldn't help frowning when he saw the twists and turns, "I originally made an order to have the heads of the Xu family's father and son, but he actually disobeyed my will. ”

Yu Shinan said: "Your Majesty, there is a reason for the incident, when Jiang Shanhe entered the city to deceive ......"

Yu Shinan told Xu Shiji, Wang Bo, and Jiang Shanhe's plan again. Li Chongjiu then understood: "It turns out that there are still such twists and turns, if it weren't for this, you can't take Yanzhou so quickly, Jiang Shanhe promised Xu Yuanlang and his son not to die, although it was his own opinion, but it was also excusable." ”

Zhang Xuansu said: "Your Majesty, after hearing that Xu Yuanlang was captured, I scolded His Majesty for not keeping his word and being honest and shameless in front of the prison guards all day and night. ”

Li Chongjiu listened and said, "Is there such a thing? ”

Zhang Xuansu said: "Your Majesty, Xu Yuanlang This is the way to seek death, this person can't let go." ”

"But General Chiang has already agreed to him, so aren't we betraying our promise?" Yu Shinan objected.

Zhang Xuansu said: "It was Jiang Shanhe who agreed, but His Majesty did not give him this power, take it back, and give Jiang Shanhe some compensation when the time comes." ”

Yu Shinan said: "But this matter is related to the national system and spread out." ”

Li Chongjiu said: "You don't have to dispute anymore, I already have a claim on this matter." What I am concerned about now is, how has the embargo been done in Guanzhong in the past two months? ”

Zhang Xuansu said: "Returning to Your Majesty, I was about to tell you." The waterway from Luoyang to Guanzhong, 6 roads have been set up and guarded by soldiers. Strict inspection of passing vendors. According to His Majesty's previous explanation, all grain and salt will be taxed ten times heavier. ”

Li Chongjiu said: "This matter is not easy to do, although we set up checkpoints, but there are also profit-seeking people." Smuggling to Guanzhong, such people should be dealt with severely. ”

Zhang Xuansu said: "Your Majesty, this matter will be strictly supervised by the soldiers." ”

Li Chongjiu said: "Zhang Aiqing is doing things, I am much more relieved, so in the two months of the embargo, the price of grain in Guanzhong can fluctuate." ”

Zhang Xuansu said: "Return to Your Majesty." The climate in Guanzhong this year is not bad, although the wind and rain are not smooth, but how can it be considered a normal year. ”

"A normal year, but what about last year?" Li Chongjiu asked with concern.

"That's good, too."

Zhang Xuansu said this and smiled: "But even if it's good, in a normal year, Guanzhong grain and rice can't be self-sufficient." Since the founding of the Great Sui Dynasty, Guanzhong grain and rice. All of them have to rely on Jianghuai rice to be transported to Guanzhong, and at least one million stones are required every year. In the past, when transporting grain, it was the grain ship that arrived in Luoyang directly, all the way to the north through Sanmenxia, and all the way to take 6 roads through Tongguan Road, and then transported to Chang'an by ship through Weishui. Now the Yellow River waterway is a card, where is there a grain ship on the Yellow River to the west. ”

Li Chongjiu listened and asked, "Didn't you say that Sanmenxia is difficult to sail?" ”

Zhang Xuansu said: "Your Majesty is right. In the past, the Yellow River passed through Sanmenxia, and it was extremely difficult to sail against the current. Therefore, the successive dynasties have carved stone rings or holes on the mountain rocks along the north bank of the river, and then inserted horizontal logs in the holes, and paved wooden planks as a plank road for pulling fibers, so that the slender men can pull the boat upstream. But even so, Sanmenxia still has ships and deaths from time to time. In the seventh year of the Great Cause, the bottom pillar landslide, the Yanhe River flowed backwards for dozens of miles, and the Yellow River flooded more than 30 counties downstream. Therefore, the Sanmenxia waterway is more difficult to navigate, but there are always people who are greedy for luck and sail from here. ”

Li Chongjiu said: "The waterway is not smooth, it seems that there are only 6 routes." ”

Zhang Xuansu said: "Exactly, right now, His Majesty has captured Luoyang." Another ban was issued, and neither the Jianghuai merchant ships nor the 6 Shang merchant gangs could enter the west of Guanzhong. Therefore, although the summer grain in Guanzhong is already about to be harvested, the price of grain has risen instead. ”

Li Chongjiu said: "The harvest year is still like this, and the disaster year depends on how Li Yuan can survive it." Even if I don't attack Chang'an and block Luoyang, I can force Li Yuan to run out of food within a few years. Of course, unless Li Yuan moves the capital, but in this case, he has also lost the support of the Guanlongmen valve and dies faster, so Li Tang has a way to deal with it now? ”

Zhang Xuansu said: "According to the news we received from Li Tang Tangtang, Li Yuan has attached great importance to the rise in grain prices in Chang'an, and is already taking precautions for a rainy day, and even listed his important matter as attacking Xiao Mo this year. ”

Li Chongjiu smiled slightly when he heard this, now Li Tang and Zhao Guodu are facing problems, Li Yuan is facing the crisis of insufficient grain and rice in Guanzhong, and Li Chongjiu is silting up the Yongji Canal, making it difficult for Luoyang and Youjing to pass by ship. However, Li Chongjiu has ordered Zhou Bo and He Chou to take charge of the matter, and it is expected that the Yongji Canal can be dredged within this year.

And what about Li Tang? Although there is a bumper harvest of grain and grass this year, there are many major disasters and small disasters in Guanzhong, and Li Yuan cannot be so lucky every year. Last year, this year may have allowed Li Yuan to survive, if there is a big hunger in Guanzhong next year, Li Yuan will take care of himself, and Zhao Guo's opportunity will come.

So now for Li Chongjiu, it takes time.

"Li Yuan is a far-sighted person," Li Chongjiu asked at the moment, "Then what countermeasures can the Li Tang court discuss?" I don't believe they'll sit still. ”

Zhang Xuansu said: "Li Tang has come up with two methods? ”

"Two ways?" Yu Shinan said with a smile, "I really didn't expect that if there was a way, Emperor Wu wouldn't have to move the capital to Luoyang." ”

Yu Shinan looked disappreciative, and Li Chongjiu said: "Let's listen to it, maybe there is something to be seen?" In my opinion, the fertile land in Guanzhong has been reclaimed to the extreme, and Li Tang's current solution is to raise grain from other places. ”

Zhang Xuansu said: "Your Majesty is really like a god, one of Li Tang's solutions is to rebuild the Bao Slope Road, and the grain and grass will pass from the Bao Slope Road through the 6th Road to the Bao Shui Tong, from the Slope Road to Wei, and then go to the boat." ”

You must know that the ancient road leading to Guanzhong in Hanzhong has four paths: Bao Slope Road, Chen Cang Road, Fu Luo Road, and Meridian Road. Although there are many narrow valleys and dangerous sections, compared with the other three roads, the distance is shorter, and it is also the most important passage from Hanzhong to Guan.

Li Chongjiu said with a smile: "Isn't Li Yuan trying to transport grain from Sichuan and Shu?" I heard that Zhuge Liang went out of Qishan seven times and repeatedly retired due to the exhaustion of food, if Bao Shudao can really transport grain, Li Yuan is really better than Zhuge Wuhou. ”

Zhang Xuansu and Yu Shinan all smiled when they heard Li Chongjiu ridicule him like this.

The fact is also the same, as we all know, on the world's states on the rich Yang Yi Shu two, relative to Chang'an, Sichuan and Shu are near, and Jianghuai Yuan, if you can transport grain from Sichuan and Shu to Guanzhong, to solve the problem of food shortage, of course, it is the best.

However, sweet dreams are not reality after all, and the difficulty of Shu Road is daunting. It took too much effort to cross the Qinling Mountains to transport grain to Guanzhong.

Zhang Xuansu said: "Exactly, the Li Tang court discussed that the road was dug from Shangzhou and crossed the Qinling Mountains to Sichuan and Shu. However, this policy is just a drop in the bucket in Weichen's opinion, even if the grain of Sichuan and Shu is transported to Guanzhong, its grain and rice are not affordable except for the princes and ministers. ”

"And what about the second option?" Li Chongjiu asked.

"The second method discussed by Li Tang and the opposition is to cultivate fields in the east of the river and divert the water of the Yellow River for irrigation, and if it succeeds, it can open up thousands of hectares of fertile land and harvest more than hundreds of thousands of stones."

Li Chongjiu frowned when he heard this: "Hedong Tuntian, is this feasible?" ”

Yu Shinan stepped forward and said: "There is a precedent for this matter, when the two Han Dynasty, Cao Yun was limited by the pillars, and the grain ships were damaged, so there were ministers who built yì, and led Fen through the canal to irrigate Pishi and Fenyin, which is the land of Fenyin and Puban today. The minister said that after the valley was obtained, from Weishang to Guanzhong, it could save thousands of miles of labor. But as a result, tens of thousands of people died in the canal fields, but there was no harvest. ”

"How can it be so easy to divert canals for irrigation, Your Majesty can rest assured, if Li Yuan wants to farm here, it will just be a repeat of the past."

Zhang Xuansu said: "But at present, Li Yuan really attaches great importance to the grain of Hedong, in order to ensure the abundant yield of grain and grass in Hedong, Li Yuan recently sent Yu Yun, the governor of Shaanzhou, to garrison Lingzhou, in order to prepare for the Turks to fight the grass valley. Li Yuan also ordered the establishment of a sailor division on the Yellow River in Lingzhou, and went to the south of the Yangtze River to recruit shipwrights to build ships, and set up a six-city water transport box to supervise the grain ship. ”

Yu Shinan said: "Although Li Yuan is hoarding grain in Hedong, it is easier than transporting grain from Baochuan Road, but the grain from Hedong must be supplied to Guanzhong, and it must also be supplied to Lingzhou, Hexi soldiers and horses, where will there be spare strength." ”

Zhang Xuansu and Yu Shinan both thought that the fertile land in Hedong was limited, and if they could really supply Guanzhong with the fertile land in Hedong, then all dynasties would not have to find a way to transport grain from Jianghuai.

Since the two Han Dynasty, the population of Guanzhong has always been the most important in the world, from the Han, Wei, and Sui have always been to move to the high and rich, and the heroes have enriched Guanzhong. However, Guanzhong has a large population, but since the Qin and Han dynasties, due to long-term drought and waterlogging, the grain production of the 800-mile Qinchuan has not increased much.

Now that the population is increasing and the grain is decreasing, it has become a dilemma in Guanzhong, and although Li Tang's capital is Guanzhong, there are also disadvantages. This is why the end of the Tang Dynasty, from Gaozong to Wu Zetian, to the later Xuanzong, has always wanted to move the capital to Luoyang, but except for Wu Zetian, other people's plans to move the capital were all under the strong opposition of the Guanlongmen valve, and did not succeed.

When Xuanzong arrived, Xuanzong of the Tang Dynasty enabled Pei Yaoqing to be the prime minister, and Pei Yaoqing proposed that he adopt the transfer method, first kill the 6 transportation of Shaanxi, place the warehouse estuary, and make the Jiangnan Cao boat transport to the estuary; Imported millet into the warehouse and returned to Jiangnan. The imperial court hired a boat into Luoyang again. After that, the granaries were set up in the east and west of Sanmenxia, and the Cao boat from Luoyang was imported into the East Warehouse, and the West Warehouse was imported in the way of 6 transports, and then entered Chang'an in the way of the boat, so as to avoid the water risk of Sanmen.

Pei Yaoqing's method is to transfer them step by step, and a special person is responsible for 6 transportation, which is slightly relieved.

And now that Luoyang is in the hands of Li Chongjiu, even if Li Tang comes up with this step-by-step transfer method, it is useless. In fact, in the Qin and Han dynasties, it was correct to establish the capital in Guanzhong, but by the time of the Sui and Tang dynasties, it was very reluctant to establish the capital in Guanzhong.