The concrete pieces that Li Jing took back were passed back and forth in everyone's hands. During this period, except for Lao Cheng biting them with his teeth, the observation methods of others were very normal.

"Your Majesty, why not go and see how the outer wall of the bastion is together?" The Tang Dynasty relied on the crossbow to drill the siege into the city wall, and then let the soldiers climb the city. When facing the bastion, they failed. There was no one that could be embedded into the outer wall of the bastion, which made everyone very curious.

Although I have seen the concrete pieces, everyone still cannot understand what the exterior wall looks like.

Moreover, everyone was wondering how thick the exterior wall was and what it was destroyed after a attack.

"Go together, the prince is here too." Old Li said with a smile.

He had seen it the night before yesterday and knew that the exterior wall was only two feet at most, which was much thinner than the current city wall of the Tang Dynasty. So now Lao Li is looking forward to seeing the second surprise of his ministers.

A group of people, led by Li Er, walked towards the castle, accompanied by the bargaining sound of Cheng Yaoxian breaking gong. After seeing the defense of the castle, this guy became even more obsessed with cement.

"Your Majesty, this wall is less than two feet thick?" Chai Shao turned around three times inside and out, and finally asked in confusion.

"Well, it's much thinner than the city walls of my Tang Dynasty today." Duan Zhixuan watched with Chai Shao and also expressed his support.

"What's that? Didn't you see the wall just now? The biggest trauma is only the size of a bowl." Old Yuchi was showing off his eyes and was more useful.

"This cement is really a good thing. It is faster and stronger to build a city wall. It is better to encircle the Turks in the city wall." I don't know if the second guy said this, but it is very likely that Cheng Lao Huo, and no one except him could come up with such a second idea.

Various amazements finally satisfied Li Er, and the 18,000 pores on his body followed him with a lot of softness. His eyes looked much softer.

"Hejian, your office is a good place, it's really safe." After entering the "office" surrounded by the bastion, Li Xiaogong's "office" and just sat down, Yuchi said carelessly, which caused everyone in the room to laugh.

"You like to give it to you." Li Xiaogong rolled his eyes and said.

The last time he built a stone city outside his place, he was sued for rebellion. Now this unscrupulous old man has a very psychological shadow.

"Okay, okay, let's calm down. You have also seen the functions of the castle and cement. Let's talk about any ideas." Old Li knocked on the table with the pen holder on the table and said.

The whole process made the expression on the face of Li Xiaogong, the Prince of Hejian, twitch, for fear that Lao Li would break his pen holder.

"Your Majesty, what else can I say? One ten miles away, built a bastion all over the grassland. Then we can see how those Turks will grazle." Cheng Lao Huo was the first to respond to Lao Li's call, stood up to express his opinions, and firmly believed that his idea was the most correct - to circle the grasslands.

"I'm talking nonsense, haven't I heard from the prince that this concrete needs stones? The grassland is built everywhere. Where do you get your sand and stones? From Longyou to the grassland?" Chai Shao said unconsciously.

"Then what do you think? If there is such a good thing, you don't need to build a fortress, so why do you keep it? Put it at home to give birth?" Lao Cheng, who was pushed by Chai Shao, glared at his eyes and immediately took out a state of being ready to fight.

"In my opinion, I should have pushed all the city walls and rebuilt them all with this mud." Old Yuchi rushed up to express his opinion without waiting for Chai Shao to speak again.

"Nobody, who has pushed to build the city wall? Mobilize the civilians? Do you want to trigger a riot similar to the end of the Sui Dynasty?" Li Jing said slowly while he was standing.

"This is not OK, that is not OK, so what do you think you should do?"

"I think the house of the prince is good, so it's better to use it for people's livelihood construction first." Fang Xuanling, who had not spoken much, said.

"How can this be? Cement, a powerful weapon for building cities, must be used in military terms." Although Chai Shao was with Lao Chengding, if he really wanted to use it, he still had the same view as Lao Cheng, which must be used in military terms.

"Shut up. Cement is studied by the Prince's Carboniferous Department, so let the Prince talk about it." Old Li continued to knock on the pen holder that made Li Xiaogong feel sore. The unscrupulous old man not only shook his face, but also kept twitching his body.

"If you want to build a road, if you want to be rich, build the road first." Li Chengqian said without thinking.

As a result, the words were finished, Lao Li's big mind: "Don't you use your money for a shortage? I'll open my mouth and shut up, what kind of morality is it! Tell me again!"

Looking at the old guys who were laughing, especially the old goblins who were winking, Li Chengqian felt that the old man was jealous of his too smart and wanted to beat him up a little stupid.

But the old man was the old man after all, and he would beat him. Rubbing the back of his head that was vaguely painful, Li Cheng said with a dry mouth: "The road is repaired, which can increase the speed of the march and facilitate logistics supply. Can this be done, Father?"

"No," Old Li nodded and said satisfied, looking like he was taking the exam for Li Chengqian.

"Isn't there still no one to build roads? I can't recruit civilians, and no one will do this job." Old Yuchi was rarely smart.

"Crown Prince, continue." Comrade Li turned his eyes to Li Chengqian, as if Li Chengqian was a roundworm in his belly.

Many projects that require a lot of manual labor in the Tang Dynasty were in a state of suspension. In order to maintain health and rest, it was also to reduce the burden on the people.

Under such circumstances, Lao Li could not solve the artificial problem, so this arduous task was once handed over to Li Chengqian, who was "far from the world".

He looked at his old man pitifully, trying to make himself look cute, but in the end he got a look of "you can do it".

After sighing deeply, Li Chengqian looked at the sixteen generals sitting there, and said after a while: "The problem of this worker needs to be solved by uncles."

"Chengqian, this joke is not enough. The Sixteen Guards are stationed in the capital and cannot be transferred randomly. Your farm is on the edge of Chang'an. Everyone will give you some people to help you. There is no problem in building roads. You cannot follow the rules." Without waiting for the others to speak, Chai Shao made a statement and rejected Li Chengqian's proposal.

Even Li Er stared at Li Chengqian with a bad expression, thinking that his idea was bad enough.

However, Li Chengqian had no intention of stopping, jumped out of his chair, and under the gaze of the old men, he said slowly: "Who said he was going to move the soldiers of the Sixteen Guards?"

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Chapter completed!