In December of the third year of Yuanhe, after completing the strategy of Mobei and establishing two in-depth strategic defense lines in the direction of the grassland, the Northern Expeditionary Army, which had stayed in Mobei for a whole year, returned to Fengzhou.

In the heavy snow, Guo Rong, who was dressed in armor, silently came to Zhang Daoye's side.

"Lao Zhang, tell me the truth, how is Your Majesty's physical condition now?"

Rao is already very familiar with Guo Rong, but when he heard this, Lao Zhang, wearing a robe made of wool, with a whisk under his arm, Zhang Jiaxuan Zhang Zhenren, who was arrogant, fairy-like, and handsome, was still almost planted off the horse.

"I remember I told you that Your Majesty's physical condition is not good, and I will agree that Your Majesty's exit from the fortress is also a good fight!"

"Since the exit, although Your Majesty's mood is relatively stable, and the state seems to be good, Liu Runlong, no, the ginseng sent by President Liu Jiedu is quite good, and after deployment, it is of great benefit to His Majesty's body, but after all, it is impossible to really have the effect of resurrecting the dead, and it is already the limit to be able to prolong His Majesty's life."

"But ......"

"You mean the last few days!"

"Yes, Your Majesty seems to be in pretty good shape in the last few days!"

"It's going to be quite good because I'm coming back from outside the Saiwai, and I'm in better spirits, but Your Majesty's physical condition is actually very poor, and ordinary people can't stand such a long-distance trek, let alone Your Majesty."

"Then do you think it is necessary to stay in Fengzhou for a few more days, so that Your Majesty can rest and rest well, and then return to Chang'an?"

"That's what you said!" Zhang Jiaxuan nodded expressionlessly, and after that, Zhang Jiaxuan looked at the heavy snow and looked at the carriage exclusive to the Emperor Taishang behind him.

"To be honest, whether to recuperate or not doesn't have much impact, Your Majesty's current physical state is not something that can be cultivated in a day or two, and it doesn't make much sense to stay in Fengzhou for three or five more days, even if you are more tired, as long as your mood is stable, there won't be too many twists and turns."

"Actually, if it can be done, it is best to let Your Majesty return to Chang'an as soon as possible to recuperate, and when the time comes, you may be able to prolong Your Majesty's life for one or two years! After all, Fengzhou is a bitter cold place, and the medicine I carry cannot be compared with Chang'an in terms of type and type, but I heard that Chang'an ...... caused by coal burning."

As he spoke, Zhang Jiaxuan frowned, and Guo Rong was also speechless for a while, because in a sense, he was the culprit who introduced coal into Chang'an on a large scale.

That's right, what caused the haze in Chang'an was the large-scale coal burning.

Normally, coal burning for heating in winter is not too much of a problem, but the problem lies in the aggressive character of the Tang people and the scale of Chang'an.

There is nothing to say about the positive character, although the steam engine is the top secret of Datang, but the coal is not kept secret.

Not only did he not keep it secret, but after passing the tacit command of Emperor Li Yi, Guo Rong wrote a letter to his close friend, Wei Guandi, who was in charge of the Ministry of Development and Reform and also served as Jing Zhaoyin, suggesting that he promote the use of coal instead of charcoal and firewood in Chang'an and Gyeonggi areas.

To tell the truth, coal is not a rare thing in Guanzhong, northern Shaanxi, and Weinan, but it has not been developed and utilized on a large scale for various reasons. ….

Wei Guanzhi, who has been working in Chang'an City, doesn't know what soil erosion is, but he understands the citizens of Chang'an, and he also understands the suffering of Chang'an citizens.

In the letter, in addition to the uses he already knew about smelting, steam engines, etc., Guo Rong also gave that it is much cheaper than firewood, it covers a smaller area than firewood, and it is easier to heat, which can give the people of Chang'an one more way to support their own livelihood...... And so on and so forth.

Based on the principle of personal experience, Wei Guanzhi tried it at home, and then Wei Guanzhi found that except for the smoke and dust, which was a little bigger, the others were the same as what Guo Rong said.

After that, Wei Guanzhi did not hesitate to promote it throughout Jingzhaoyin, and at the same time built a large-scale road from Fugu to Chang'an to the emperor Li Yu who stayed in Chang'an, and at the same time suggested that it should be in Guanzhong, northern Shaanxi, Hedong, and Long

Large-scale exploration in the West and Han Regions.

Of course, what Guo Rong reminded was that information such as the need for ventilation and prevention of carbon monoxide poisoning when used by the people was also promoted after the test.

Under the promotion of the government, after discovering that coal had to crush firewood for cooking, fire, and heating, the citizens of Chang'an decisively abandoned firewood and switched to coal.

Guo Rong's idea is good, Wei Guanzhi's purpose is good, the strategy of the imperial court is good, and the coal itself is also good, but Chang'an is the only city with a population of one million in this era.

It is a well-known fact that the larger the population and the larger the scale, the greater the problem that can be formed, for example, when a small problem is expanded to the number of 1.3 billion, it will become a big problem.

Chang'an does not have a population of 1.3 billion, but Chang'an has a population of one million......

Regarding this air in Chang'an, in the last letter I received from Yan Qing, Xiao Fourteen used the words foggy and gray, and Guo Rong's two babies often sneezed, so that Yan Qing had decided to move with Gu Lina from the eldest princess's mansion in Chang'an City to live in the manor in Yushan, thirty miles southeast of Chang'an City.

Foggy, gray, see these words that later generations often see, is also very speechless, no way, coal burning will definitely bring smoke and dust, Chang'an this plain terrain does not use pollution to spread, people use too much to produce haze is strange.

Chang'an is not bad, but the capitals of the Daiyu Empire in later generations have directly become foggy.

Under the threat of freezing to death, Hans Meow, Gallic Chicken, and John Bull of the Animal Alliance even tore off the gorgeous coats that they occupied here and face, and they didn't see that they could solve the problems caused by this thing, and they were even more versatile.

Of course, Guo Rong still has a long memory, and when he finds an opportunity to remind Li Yu, Li Chun or Wei Guanzhi, if he builds any factory/factory in Gyeonggi in the future, it must be built outside Chang'an City, and it must avoid the wind direction in the southeast and northwest, otherwise the head of Wudu can be hung on Chang'an's head a thousand years in advance.

Guo Rong's thoughts flew to the time to control the pollution in Chang'an, and Zhang Jiaxuan, who had been thinking about it for a long time, also spoke.

"But it doesn't matter, it's better to return to Chang'an first, if Chang'an is not suitable for Your Majesty to recuperate, there are places near Chang'an, Yushan and Zhongnan Mountain are good places for recuperation." ….

received a positive answer from Zhang Jiaxuan, and Guo Rong was relieved, after all, it has been two full years since he left Chang'an.

This has greatly exceeded the initial expected time, even if the Emperor Taishang can't travel a long distance, but now that he can go, there is no need to delay.

Of course, there are more important reasons.

Anda Xian led the caravan all the way to the west, but along the established trade route from Qiuci to Chang'an, the first batch of personnel had already returned to Chang'an, and they not only brought back the news of Qiuci, but also brought back a letter from Guo Xin.

When Guo Rong led his troops from the grassland into the Hetao, this handwritten letter from Guo Xin, thousands of miles away, was finally delivered to Guo Rong's hands after several turns.

After reading Guo Xin's letter, understanding the current situation of Qiuzi, understanding Guo Xin's thoughts and layout, and being shocked by the vision, strategy, and courage of his father-in-law, Guo Rong also understood what Guo Xin wanted him to do, but all actions must not be carried out until he returned to Chang'an.

In addition, now that Li Chan is about to run out of oil, Guo Rong has to speed up, it's still the same sentence, Li Chun is very good, but Guo Rong always feels that Li Chan is closer.

After completing the consultation with Zhang Jiaxuan, Guo Rong returned to the side of Emperor Li Yu.

"Your Majesty, after careful consideration, the minister has decided to return to Chang'an ahead of schedule!"

"Oh, you mean Longxi won't go?"

"Your Majesty, Lingwu, Shuofang, Longxi is no less bitter cold than Mobei, the soldiers are very tired after a whole year of fighting on the grassland, and we have been away from Chang'an for two years, many soldiers are also homesick, not to hide Your Majesty's ministers are also homesick......

"Ahahahaha," Li Yu immediately laughed, "It's okay, it's been two years since we left Chang'an, tsk

Tsk, that's longer than I've been emperor."

「……」

"Okay, I won't tease you, two years is indeed a long time, and I have basically seen the great rivers and mountains of Datang, to be honest, I am also tired, but now Chang'an makes me more curious."

"Chun'er described the changes in Chang'an to me in the letter, and the courtiers gave me a report, and I also want to see what the steam engine, sea ship, and loom you proposed, so let's decide!"

"Yes!"

"Have you chosen your path back?"

"According to the situation, it should be the choice of Hedong Road, and the specific minister has not yet had time to choose."

"In this way, since you discovered the coal of Fugu last summer and began to use it, Fugu seems to be very favored by Chun'er and the central Zaifu, not only upgraded to Fu, large-scale development, in order to transport Fugu's coal to Chang'an, a big road seems to have begun to be built, let's take that road."

Li Yu chose the path, Guo Rong naturally would not object, and he was also clear about that path.

After all, the first half of the section is the same as taking the river east road, that is, along the river to the east, which is very flat, as for the second half of the road......

He once asked Han Yu to order the recruits of the reconnaissance battalion and engineer battalion of the Changying Army to conduct reconnaissance and exploration between Fugu and Chang'an, so as to facilitate the construction of roads for transporting coal in the future.

It's just that Guo Rong didn't expect that this road had just been selected by exploration, and it was directly requisitioned by Wei Guanzhi and others, as the road to Fugu-Chang'an in the future, according to the map sent by Han Yu and his own memory, Guo Rong felt very much like the path of the Baomao Expressway in later generations. ….

According to the information compiled by the reconnaissance battalion, this road can be passed by the brigade, so from the beginning Guo Rong regarded this road as one of the alternative routes.

Although the chosen path is still in the embryonic stage and is located in the lofty mountains, Guo Rong is still confident in the quality of the Changying Army Engineer Battalion and Reconnaissance Battalion. And according to Guo Rong's understanding, Wei Guanzhi still organized the people to start transporting raw coal to Chang'an.

As the path of the return journey was determined, the reconnaissance battalion of the Changying Army immediately dispatched to continue drawing maps while probing the path.

After returning to Fengzhou from the grassland, Guo Rong led a group of generals of the Northern Expeditionary Army, plus the main generals of Shuofang, Zhenwu, and Hedong Towns, who had been waiting here for a long time, and began to pack up the follow-up matters in full swing.

The Tiande Army and the Zhenwu Army completed the merger, but the most important task of the Zhenwu Army at this time changed from defending Mobei to supporting Shuofang and worship, while ensuring the safety of Fugu, the emerging energy center of the Tang Dynasty.

Subsequently, the cavalry that had been drawn from various armies before the expedition returned to their respective formations, and they needed to stay in Fengzhou and replenish the soldiers and horses of the two prefectures of Yunzhong and Huyan for deployment.

After all the supplies and transfers were completed, the reorganized forbidden army marched eastward along the Yellow River along the chosen road, and after ten days the army began to advance along the turn of the Yellow River to the south, along the not too wide mountain road it had once traveled, and arrived at Fugu half a month later.

It was not only the Emperor Li Yu who was curious about Fugu, but also a group of generals of the forbidden army, all of whom were curious about what the place that Guo Rong called the coal capital was like.

According to Guo Rong, Fugu used to be just a small city, with two hundred garrisons and two or three thousand people.

However, when the forbidden army crossed the mountain road and arrived at Fugu, they saw more than two or three thousand people, and the entire Fugu was not densely packed with people everywhere on the slopes and valley floors.

The mountains are all over the wilderness, and the crowds of people are indeed realistic rather than rhetorical, and the density of this flow of people is even better than that of Chang'an.

Some people use some special tools for exploration, some are working non-stop, and some people use baskets to load the coal that has been taken out and carry them forward, in Guo Rong's feeling, Fugu at this time has become a huge construction site or mine.

From time to time, there will be a few poor people in official uniforms in the crowd, as if to tell others that this place is still under the rule of the Tang Dynasty.

Of course, at this time, Fugu is no longer called Fugu Town, but has been upgraded to Fuzhou, the coal town of Datang, Fuzhou!

"A year ago, in between

In addition, the Ministry of Household and the Ministry of Industry have set up supervision here, the Ministry of Criminal Affairs has set up a yamen here, the Ministry of Development and Reform, the General Supervisor, the Maritime Supervision and the Science and Technology Supervision have ...... here, and the Ministry of War has directly set up an army here to protect the safety of Fugu."

Standing at the former Fugu Fort, which is now the head of the city of Fuzhou, the words of the Emperor Taishang made Guo Rong extremely shocked, to this extent, how to say it is a bit over, after all, it is just ......

"Do you think they're making a big fuss right now?" ….

"Forehead ......"

As he spoke, Li Yu picked up the coal in his hand and looked at it seriously towards the sun.

"I remember you said that it was this dark thing that allowed the soldiers to eat a hot meal even in the ice and snow, and to sleep in the warmth when the enemy was shivering in the cold......

"Yes."

"Do you know that in Chang'an City, the poor will no longer use firewood, and the rich families will no longer use charcoal, and both firewood and charcoal have been replaced by coal in front of them......

Halfway through speaking, Li Yu suddenly stopped, looked at Guo Rong, and then said with a smile.

"Hey, how could you not know this, it should be your idea to let Wei Guanzhi promote coal, although it is not perfect, but this is good governance, if only the steam engine I would not care so much, but now this coal ...... It has become the foundation of my Datang people's livelihood, and I can't help but ignore it."

"Actually, I thought they were making a big fuss before I got here, after all, the steam engine is very useful, but how much coal can be used for it...... But today, seeing the hardships of all the craftsmen and workers, I know that I am wrong, and I understand that this is not something that can be done overnight."

"The road you sent someone to explore in advance is very good, otherwise you will waste at least two years of ......, two years, I don't know if I can live for another two years......

At this moment, Guo Rong suddenly felt that Li Yu had grown old all of a sudden, and after losing the kind of temperament that belonged to the emperor on his body, Li Yu was like an ordinary old man.

"Your Majesty......"

"Okay, I know what you're going to say, but I don't want to hear it today, you have only one task today, listen to me well, and you can't intervene without my orders!"

「……」

"Before, in Toyosu, you said that you were homesick, but I didn't understand, until just now, I suddenly understood, and I was homesick too!"

"I was born in Chang'an, grew up in Chang'an, served as a prince in Chang'an for twenty-five years, succeeded to the throne in Chang'an, and was ousted from the throne in Chang'an, my home is in Chang'an......

"Young and innocent, young as a man, middle-aged like walking on thin ice, I finally survived until my father passed away, thinking that under my control, Datang could return to the peak, but I didn't expect that my debut was the peak, and the peak was only for a moment."

Before I knew it, Li Chen's face was covered with tears, and Li Chen's title changed from me to me, while Guo Rong stood quietly next to him, treating himself as a tree hole.

"Before abdicating, I was worried that I would become a laughing stock in the history books, but I didn't think that it was not only the throne that would fade, but also the shackles in my heart.

"Chaowen said, I can die at night, I am lucky, Chaowen said, but people are still alive, and there is still a chance to make up for the regrets of the past."

"Chun'er is very good, wise, intelligent, open-minded, he will be a better emperor than me, although he is not very responsible, he is not a role model, but fortunately, I did not become a deserter, and I did not leave a mess for Chun'er like my father...... cough, cough, cough, cough!" ….

"Your Majesty......"

"I said, you don't need to intervene, the crime of bullying the king, destroy the nine clans~"

「……」

"You and Zhang Jiaxuan's careful thoughts, I know that my body knows by myself, in order to prolong my life, the two of you have done your best, and there are courtiers who are willing to do this for me, I am content!"

"Where did I just go?"

Looking at Li Chan, who was waiting for his answer, Guo Rong felt that life was worse than death, whether to say it or not!

"Your Majesty said that there was no mess left for the Son of Heaven......

"Oh, yes, I think about it, fortunately, I didn't leave a mess for Chun'er, it doesn't matter if I have a mausoleum, it doesn't matter if I call it, anyway, I've only been the emperor for half a year, so I can stay in my Li Tang's temple, and I don't have to worry about being kicked out by my ancestors......

"Of course, if it's possible, when it comes to evaluation in the future, I'll help fight for a not-so-bad nickname, Wen Chengwude doesn't dare to think about it, at least it's not like a, at least I've cultivated a master of Zhongxing, right?"

After being stared at by Li Yu for a long time again, Guo Rong came back to his senses.

"Your Majesty, rest assured, there are ministers in ......."

"It's okay to have this heart, and it's not in vain for me to bother, I've actually lived enough so far, and every extra day I live is earned......

After saying this, Li Yu just looked at the sun quietly and did not continue to speak until a long time later, when the sun was about to set.

"It's enough to see in Fugu for a day today, everything you should know has been understood, there's no point in staying any longer, let's continue to set off tomorrow, along the coal transportation line that has been opened up, let's go home and go back to Chang'an!"

。.

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