Outside Hanyuan Hall, two huge white marble pillars stand on the road leading to Xuanzheng Hall. These are the few items in the Daming Palace that use huge stones.

Li Yuan looked around curiously.

"Kuan'er, are these floors paved with the concrete you mentioned? They also look very solid."

"Yes, this concrete is not afraid of rain and can bear heavy objects. The ground is flat and has no potholes. It is much faster to build than a stone road."

Although the stone road looks more primitive, in later generations, many retro buildings will definitely like to do this; but in the Tang Dynasty, what kind of primitiveness is needed?

The entire city of Chang'an is full of simplicity. The roads in the Daming Palace were changed from stone roads to cement roads. Not only did everyone not feel incongruous, but they felt novel and luxurious.

As for Li Kuan himself, who feels a little uncoordinated, what does that have to do with it?

"If you say so, wouldn't it be good for paving official roads?"

Li Yuan was worthy of being an emperor, and he immediately felt the usefulness of the cement road.

You must know that even in later generations, cement roads have become the most important road construction plan, just like asphalt roads.

If the official roads of the Tang Dynasty could be paved with concrete roads, the significance would definitely be extraordinary.

Why were the ancient dynasties’ rule over the frontiers always relatively weak?

Inconvenient transportation is a particularly important reason.

Think about it, during the Han Dynasty, there was a rebellion in the Western Regions. By the time the news reached the central government, it might have been several months.

No matter what countermeasures are adopted, they cannot accurately reflect local needs.

By the time the army goes out to fight, the day lilies may be cold!

"The emperor's grandfather Shengming, the greatest uses of cement are two, one is to build roads, the other is to build houses and fortresses."

"fortress?"

Li Shimin couldn't help but interjected.

Building roads and houses is easy to understand, and there are ready-made examples in the Daming Palace.

But, a fortress?

Why do I feel like there seems to be a lot of information in this.

"That's right, fortresses. Especially in border areas. For example, in various parts of East Turkestan in the past, although the imperial court set up Yunzhong Dudu Mansion and other government offices to manage it, the areas that could actually be controlled were very limited for the vast grasslands. Most of them

Each tribe is still ruling on its own. If a military fort can be built ten miles apart, and these military forts can be connected in a line to connect the entire prairie, then the Tang Dynasty's actual influence on these places will be greatly improved."

Li Kuan's grassland strategy has only progressed to the first step. Taking this opportunity, he felt that he could put forward the ideas for the second step.

Military forts were not a rare thing in the Tang Dynasty, and they were built in many places on the frontier.

However, the overall number is relatively limited, and the protective capabilities are also uneven.

In the final analysis, it is still too difficult to build a military fort on the border.

It’s time-consuming, labor-intensive, and too costly.

However, if there is cement, the difficulty of construction will be greatly reduced.

Whether it is gravel or sand, they are easier to obtain than boulders and the cost is low.

So as long as you choose a place with a water source and build a military fort that can accommodate thousands of people, it becomes much easier.

If there were a cement road connecting these Ejun forts all over the grassland, it would be like a chain locking the prairie.

Once something happens, Datang can respond quickly.

Moreover, these military forts can also be regarded as a powerful boost to the expansion of the commercial tentacles of the Tang Dynasty such as the northwest trade.

"Please sort out your thoughts and write me a note. Then let the Ministry of War and the Ministry of Household Affairs discuss it together to see the feasibility of this plan."

Although today's main topic is not political affairs, the topic has changed as we speak, and there is nothing we can do about it.

Li Yuan followed Li Kuan and wandered around the Daming Palace for a long time, until he felt a little tired, so he returned to the palace to rest. Ministers from all walks of life also reluctantly left the Daming Palace.

That night, Li Yuan stayed in the Daming Palace, and the new palace was officially opened.

…

In the Tai Chi Palace, Li Shimin stayed in the imperial study room to review today's memorial.

Yesterday, Li Shimin was very excited after walking around the Daming Palace. But after getting excited, he found that compared with the Daming Palace...

Then, Li Shimin couldn't sleep at night!

After finally finishing the court meeting today, Li Shimin really wanted to catch up on some sleep, but strong inertia forced him to continue to the imperial study room to continue reviewing the memorials.

Although it is not too cold in the imperial study room, compared with the situation in Hanyuan Palace yesterday...

Li Shimin felt that he couldn't sit down any longer.

My father doesn't seem to be in very good shape lately. He worked hard all day yesterday. Do you want to go and see him?

Li Shimin couldn't help but have this thought in his mind.

There is also the concubine of Chu State. After listening to the Guanyin card, her body is not as strong as before.

Although state affairs are important, filial piety seems to be also important?

what to do?

How about letting Lan He take these memorials and go to the Daming Palace to see his father and the concubine, and then go over the memorials in the Hanyuan Palace for a while and then come back?

With this thought in his mind, Li Shimin could no longer sit still.

"Lan He, please send someone to the Daming Palace to see how the Emperor's health is today. If there is any abnormality, report to me immediately."

Li Shimin finally endured it, took a deep breath, and continued to work.

One day has passed...

Two days have passed...

Three days have passed...

After hearing Lan He say that the Emperor seemed to have sneezed a few times today, Li Shimin finally felt that he needed to go to the Daming Palace to visit.

Filial piety comes first among all good deeds, and I am also setting an example for all officials!

Li Shimin kept saying this to himself, and soon Yujia arrived at the Daming Palace.

"Erlang, why are you free to see me today?"

Li Yuan was in the Penglai Pavilion, watching a group of dancers dancing, with the Princess of Chu sitting next to him.

Since moving into Daming Palace, Li Yuan's view of Li Shimin has greatly changed, and he no longer thinks about many things that happened in the past.

Even thinking about it is in vain and is asking for trouble.

"My son, I came to pay my respects to my father. I heard that my father had a cold, so I came here to have a look."

Li Shimin breathed a sigh of relief when he saw that Li Yuan seemed to be in good mental condition.

At this moment, Li Shimin hopes more than others that Li Yuan can live longer, so that he can see the Tang Dynasty prospering in his hands, and can also prove from the side that his original choice was right.

For the sake of the Tang Dynasty, it was considered for all generations.

"It's okay. I just didn't wear enough clothes in the house. When I went to the balcony, I got caught in the wind and coughed a few times. It's okay."

"Erlang, although the Daming Palace has only been built in the first phase, the area of ​​the palace is already larger than that of Taiji Palace. The various parts of the front palace are basically abandoned. If you don't mind the trouble, you can also move to

Go to the front palace, it will be more comfortable if you stay there in winter."
Chapter completed!