Beta City.

The prefect's yamen, the back yamen.

Wu Nian was dressed in a single shirt and simply played a set of boxing techniques. But he was already sweating. He picked up a white cloth towel from the plate held by the Ouchi guard next to him and wiped the sweat from his face.

Then, he and Wu Min came to the pavilion and sat down.

"It's really unforgiving. It's a bit unbearable to punch on such a hot day. Wu Nian picked up the water cup on the stone table, drank a glass of water, and said to Wu Min with emotion.

"Please take care of the dragon's body, father." Wu Min said seriously. Wu Nian was often in the army, fighting in the south and in the north. Physically, it really worries him.

"Yes, you should take care." Wu Nian smiled and nodded.

The father and son chatted for a while. Wu Nian's topic returned to the present, looked up and asked Wu Min, "Son." For the current situation. Do you have any ideas? ”

"Returning to my father. No. Wu Min sighed and said depressedly.

The turtle formation is already difficult to break.

What's more, Meng Yuan is so strong and has the ability to fight head-on with the Han army, but he puts on a defensive posture. It's hard to put into words.

"Yes." Wu Nian also sighed. Although he ordered to brainstorm ideas, anyone who had a way to break the formation was rewarded heavily.

So far, he has received a lot of advice. But none of them are really useful.

It's a real headache.

And be sure to storm the city and slowly bulldoze it. If you choose between the speed of the soldiers and the direct attack on the capital of Mengyuan.

Wu Nian chose to slowly bulldoze it.

The lonely army is deep, and there is not enough food and grass.

That's very dangerous.

That's when it happened. An Ouchi guard walked over briskly with a black box in his hand. After entering the pavilion, he bent down and saluted, and reported: "Great King." This is an excerpt sent by the imperial court this month. ”

"Hmm." Wu Nian hummed and asked him to put the box on the table.

Wu Min stood up very measured and walked out of the pavilion.

Wu Nian glanced at him and shook his head slightly. This son's sense of proportion is really strong. The distinction between kings and ministers is very clear.

Wu Nian reached out and opened the box, took out the folds inside, and looked at them one by one. Although he entrusted all the major affairs of the state to the cabinet ministers.

There is also the crown prince as a prisoner.

But every month, the imperial court would send such a box. There are some excerpts of important ministers in it.

Liu Zhixing will also write a general outline of the major matters handled in the court within a month and hand it over to Wu Nian.

Although Wu Nian led the troops outside, he knew everything about the affairs in the imperial court.

Wu Nian looked at it, and saw the excerpt of the Ministry of Industry.

"Well, that's good." Wu Nian's eyes lit up and he nodded again and again.

Although Wu Min has a strong sense of proportion, he is young in the end. Seeing the joy between Wu Nian's eyebrows, he couldn't help but ask, "Father." Is something good happening? ”

"Hmm. The Ministry of Industry Shangshu Ma Youguang said on the excerpt. Because of some discoveries, the output of cement in the Ministry of Industry has risen to a big step. ”

Wu Nian smiled and handed the fold to Wu Min to watch.

There is a difference between this peeking and being allowed to see.

Seeing this, Wu Min unceremoniously stretched out his hand and took the fold to watch. As Wu Nian's son, he knows a lot about science and technology.

I also know what cement is.

"Congratulations, Father." Wu Min also raised his eyebrows and congratulated with a smile.

"Hmm." Wu Nian snorted, very happy.

Wait a minute.

Suddenly. Wu Nian's eyes froze and he frowned. I seemed to have thought of something just now, but it flashed by and I didn't catch it.

But since it has appeared, it is traceable.

Wu Nian sat back, bowed his head and fell into deep thought.

Seeing this, Wu Min thought for a moment, then left the pavilion lightly, and whispered to a large internal guard: "Guard the entrance and exit gates, don't enter, don't go out." ”

"Yes."

The Ouchi guard glanced at Wu Nian before answering, and turned to go down.

Wu Nian groaned, and a full quarter of an hour passed. He grabbed the fleeting thought and laughed.

"Father, but you have a strategy to deal with the Mengyuan people?" Wu Min showed joy and returned to the gazebo to sit down, showing a look of anticipation.

"Hmm." Wu Nian couldn't hide his smile, but he didn't immediately say the strategy. Instead, he looked up at the Ouchi guard outside the pavilion and said, "Go get the map." ”

When the Ouchi guards heard the conversation between father and son, they were also overjoyed.

The king's strategy must be a good strategy.

It is not far from my Han to destroy Meng Yuan.

"Yes." One of Ouchi's guards answered, then turned around and hurried away. After a while, he walked back with a rectangular box in his arms, bent down and handed it to Wu Min.

Wu Min stretched out his hand to take it, put it on the table, opened the box and took out the map in it and spread it out. The entire territory of Mengyuan includes the outer northeast and northeast regions.

As far north as the Trans-Khingan Mountains, as far east as Sakhalin Island.

The terrain includes mountains and plains, and the water resources are very developed.

Between the mountains, there are three large plains. One of these plains is the Songnen Plain. Most of the capital of Mengyuan is in the north of the Songnen Plain, a mountainous area.

At present, the Han army has conquered three cities, and theoretically speaking, it is possible to take a less straight line to reach Mengyuan.

But there were more than a dozen cities on the road, and they were heavily guarded.

Bulldozing these cities would come at a huge cost.

If you directly enter the capital of Mengyuan, the grain and grass will not be able to keep up.

What to do?

Very simple.

Technology boosts productivity.

"Son. I plan to build a wide and smooth cement road leading to Mengyuan. Wu Nian drew a straight line between the capital of Mengyuan and the three cities, and said to Wu Min with a smile.

"Uh!!!" Wu Min was stunned. The current roads are all dirt roads. Transporting grain and grass relies on manpower or livestock to pull carts forward, not to mention the slow speed. In case of rain, the road is full of potholes, and the speed is halved and halved again.

The team carrying grain struggled through the dirt road. was overheard by Meng Yuan's spies, and as soon as the cavalry came up, they robbed and burned food.

If the Han army sends troops to escort it, it will not work if there are too many.

Less is not enough. All in all, the road of directly attacking the capital of Mengyuan is full of challenges in terms of grain and grass.

If concrete roads are built, of course, the speed of grain transportation can be accelerated. But it can't be solved, the problem of being attacked.

Doesn't the cement road that has been repaired mean that it has not been repaired?

"Do you think you're confused for your father?" Wu Nian asked with a smile.

"Don't dare." Wu Min hurriedly bent down and said with his head down.

"We're building roads at the same time. Use cement and steel bars to repair the town by the roadside. Every ten miles, there is a small city. ”

"Transferred from Liaodong, the garrison of the four Youyan households. Each small city was guarded by a thousand soldiers. These small towns are responsible for both defense and warning. ”

"For example. A small city that listens to movements within a radius of thirty miles. After discovering the enemy cavalry attacking the grain convoy, they lit a beacon fire and notified the grain convoy. ”

"When the grain transport team gets the news, they can speed up and take refuge in the small town in advance."

"Feng Chong's cavalry can still walk on the road. It was found that the small scale of the Mengyuan cavalry could be eaten. Large-scale can be driven away. ”

"What do you think?"

Wu Nian smiled and told his son what he thought.