As for whether he was a bait or not, Lu Heng might not be able to tell himself.

But in any case, Li Shimin must be suspected of using him to block the knife of the five surnames and seven wangs.

But what can Lu Heng do?

Since he married Li Shimin's daughter, he can only bury his head in Li Shimin's life now.

Anyway, for Lu Heng, these great families will inevitably be stumbling blocks on his way forward.

Regardless of whether Li Shimin is using him as a knife or not.

He's always going to touch each other.

So these things, for Lu Heng, are harmless.

At this time, Lu Heng really worries about it.

Instead, it was after the wine bubble was punctured by him.

What kind of reaction will the Tibetan side have!

Now though he made out the railway, it has already begun to be laid like before.

A steam engine that can be used to travel trains on railroads.

However, there are still many problems that have not been solved.

If this time Tubo bursts because of the wine bubble.

chose to send troops to retaliate against Datang.

Then the railroad actually didn't play any role.

Lu Heng thought about it in his heart for a while.

Stretched out his hand and summoned a herald under Su Dingfang.

Directly let him go to Cheng Yanjin Mansion for a trip, and said that he had something to discuss with their father and son, and let them come to the technical college.

After hearing this, the herald rode a horse and turned around and ran directly into Chang'an City.

Seeing Lu Heng shouting and drinking to his heralds like this.

The herald did not cooperate relentlessly.

Su Dingfang couldn't help but roll his eyes.

complained about Lu Heng and said: "You kid really don't see outside, let my people run errands for you, and you don't even say a word to me!" ”

Lu Heng smiled and arched his hand and said, "It's a trivial matter to let people run errands. ”

"But here, right away, it's another big credit."

"I don't know if you're interested, General Su."

Su Dingfang glanced at Lu Heng a few times, and saw that he was halfway through what he said.

But even if you know that this kid is dying of your own appetite.

Su Dingfang still couldn't help but ask: "What kind of great merit is it, you should hurry up and say it!" ”

As a person who has been with Lu Heng for a while, Su Dingfang is still very clear about Lu Heng's ability.

Whether it is the explosives that he concocted that had a great military effect.

It is still the rectification method of rectifying the western suburbs camp at the beginning, so that the soldiers of the whole battalion can go to the parade with a new look.

In Su Dingfang's opinion, if these are taken out by another person.

That's all a real credit, but after reporting to the court, the reward will not be less.

But on Lu Heng, these extremely novel things have been regarded as commonplace.

Not to mention what credit and awards, even praise is superfluous.

So for the great credit that Lu Heng can say in his mouth.

How could Su Dingfang not be tempted.

But what Su Dingfang didn't expect was that on the way after that.

No matter how he asked, Lu Heng just didn't say it directly.

has always been smiling, so he has to be a little calm.

said that it was after arriving at the technical school, after Cheng Yanjin and his son came over.

Of course, he knew.

This really made Su Dingfang feel like a cat was scratching all the way.

It's itchy all the way!

And after the camp in the western suburbs came to the foot of the mountain under the academy.

Su Dingfang could only temporarily suppress his itch.

On the one hand, people were arranged to camp at the bottom of the mountain.

While sending out the rest of the men.

Go and investigate all the conditions in the mountains and forests near the academy.

For Su Dingfang, since he had received Li Shimin's order to defend this school.

Then he naturally has to find a way to make it leaky!

And after all the hands were scattered.

Su Dingfang followed Lu Heng to this rather mysterious technical academy for the first time.

It can only be said that everything here has made Su Dingfang a little eye-opening.

Although the academy does not occupy a large area, it has its own separate wall.

Although in Su Dingfang's eyes, this wall made of unknown stones is too thin.

It is impossible to withstand the attack of any army or bandits.

But it seems that guarding against single-handed assassins and thieves is not a big problem.

In addition to this seemingly thin wall, what surprised Su Dingfang the most in the technical college were the two small buildings in front of him.

Although these two small buildings do not look tall, they are not beautiful in appearance.

It can even be said to be like a boxy stone box.

But whether it's its white exterior walls, or the windows that are almost as transparent as the crystal.

All made Su Dingfang almost stare out of his eyes.

"This ...... This window ......, how can there be such a transparent glass in this world? ”

Hearing Su Dingfang's surprised tone.

Lu Heng said to him in a tone that was not worth making a fuss about:

"Yes, but it's like this glass that is basically free of bubbles and impurities, and I named it glass."

"What's more, although there are still few finished products produced for this glass."

"But I've already let people try out the specific production method."

"It is estimated that it will not be long before you can use it at General Su's house."

"So, don't make such a fuss."

After listening to Lu Heng's words, Su Dingfang shook his head a little incredulously.

He looked completely unconvinced.

"Sunrise, you won't come to bluff me."

"Even if a transparent glass board like this can be made, it must be a sky-high price."

"How can I afford to use a head like me?"

Lu Heng smiled and didn't explain anything to him again.

After all, it was impossible for Lu Heng to tell him directly.

The cost of firing these glasses is just a pile of sand.

The cost of materials is basically equal to zero.

As long as he expands the production capacity step by step, it will be infinitely expanded.

Sooner or later, the price of glass will become affordable for all ordinary people.

After bringing Su Dingfang into his office in the academy.

Su Dingfang was obviously interested in the building materials of the two small buildings of the academy again.

kept asking Lu Hengdao:

"Sunrise, what did you build this little building out of?"

"It doesn't look like soil or stone, but it's quite strong."

"Can this thing be used as a city wall at any time?"

For Su Dingfang, this small building in front of him is really full of treasures.

Not only is it spacious and atmospheric, but there is no sense of occlusion in it.

It's also because the glass is transparent.

The lighting is also exceptional.

It seems that you are in a better mood than staying in a dim house.

Not to mention, the materials used to build this house seem to be very light and strong.

It seems to be very suitable for the needs of the army stationed in the camp!

So it was inevitable to pull Lu Heng to ask everything clearly.

Lu Heng was also a little disturbed by Su Dingfang's questions.

Suddenly, his mind moved away from a drawer next to his desk.

Take out a bamboo tube that is more than an arm long and can be raised and retracted.

He handed it to Su Dingfang.

"Alright, alright, you better not ask about this house."

"You better take a look at this thing, this thing can be kept to your satisfaction!"