Afterwards, Li Shimin laughed heartily, and said, "Haha, is the eighth prince really smart or just stupid? Can you figure out the idea of ​​setting fire to a mountain? If setting fire to burn the whole mountain, I would have already Now that we've done it, will it be his turn?"

"That's right, the emperor, so the old minister doesn't know what the eighth prince wants. The old minister just follows the eighth prince's orders! After all, the approval for digging the Grand Canal is now in his hands, and he is the main person in charge!" Hou Jun set said.

"Um!"

"What the **** is he up to?"

Li Shimin frowned and thought.

Even a child knows that the fire can only burn the trees on the uphill, but not the whole hillside!

Therefore, the strategy of setting fire to the mountain is simply not feasible.

However, Li Shimin felt that he couldn't look at Li Chengfeng with ordinary people's eyes, so he was willing to wait and see what Li Chengfeng was playing.

…

On the left of Li Shimin, there is a big river full of stagnant water.

The river water is cloudy and yellow.

Li Shimin vaguely remembered that when he was here in the past, he was hit in the head by a boulder rolling down from the mountain.

If Li Chengfeng hadn't performed a craniotomy on him, he would have died long ago.

Although his condition is better now, whenever he is overworked, Li Shimin will feel a dull pain in his head.

It is estimated that it is the sequelae left over from that time, but it is more cost-effective than dying!

"Your Majesty, do you want the old minister to stop the Eighth Prince?"

Hou Junji asked.

Li Shimin shook his head and said, "No need, let him go! We have no way to dig through the Grand Canal at the end of June, so it's better to let the Eighth Prince try!"

"Well...the old minister has to go to work first, there are still a few carts of firewood left!"

"Okay, go get busy, I'm here to watch!"

Li Shimin waved his hand, signaling Hou Junji to step down first.

And on the left bank, there was a group of people who came here to watch Li Chengfeng dig the mountain.

Most of these people are the children of rich families in Chang'an City, as well as some literati advisers.

They heard that the Eighth Prince was going to dig a mountain?

how can that be? With manpower, how could it be possible to dig up Tianyue Mountain?

Isn't this the behavior of Yugong Yishan?

I have to say, Li Chengfeng is really making a fuss!

A few days ago, I just destroyed the Dragon King sacrificial ceremony, and now I have come up with a plan to set fire to the mountain! It also attracted a crowd of people watching.

Li Shimin wanted to see what other tricks he could play.

What if Li Chengfeng could really get rid of this mountain?

I, Li Shimin, picked up these stones and ate them, dipped them in sauce, and they were crispy.

The people on the side were also discussing.

"Set fire to the mountain? Does this work? The mountain is made of mud and rocks. Burning the mountain can only burn the trees. How can you burn the soil?"

"Yeah, so we are all wondering, what is the Eighth Prince doing?"

"He is known as the most powerful child prodigy in the history of the Tang Dynasty. Whether it is in terms of resourcefulness or force, he is one of the best existences in the Tang Dynasty! So I think the Eighth Prince must have his own way!"

"Hmph, don't think too much! It just finished raining, the soil on the mountain is wet, and there is rain on the trees, so it can't be burned at all, so this method is not feasible at all!"

"Yeah, why didn't the eighth prince even think of this? It's really strange!"

…

In the face of other people's criticism, Li Shimin also listened to it.

The mountain is so humid, even if you get dry firewood, it's useless. Whether the fire can be started is another matter.

But in fact, Li Chengfeng had already thought of this little difficulty.

From the system, Li Chengfeng spent 30,000 naughty points to buy more than 1,000 barrels of diesel in bulk, and put them all on the top of the mountain.

Afterwards, Li Chengfeng distributed the diesel oil to the soldiers, and let the soldiers fall down along the trees in the gully.

The soldiers obeyed the orders one by one.

Everyone was also curious about where Li Chengfeng got so much diesel.

Li Chengfeng didn't bother to explain, so he just said that he conjured it up, believe it or not.

As a result, those soldiers really believed it, and believed that Li Chengfeng must be the reincarnation of a god. They couldn't help being more loyal to Li Chengfeng!

The ancients were so easy to deceive.

If you say you have a system, no one will believe it, if you say you are a god, everyone will believe it!

But don't forget, the system is something even better than a god!

After getting the firewood and diesel oil ready, Li Chengfeng began to order people to light the fire.

After igniting the fire, Li Chengfeng ordered the Xuanjia Army to watch the flames burn, and then ran down the mountain to sleep.

Because the Xuanjia soldiers are used to life in the mountains, they take turns watching the flames on duty.

Soon, a bonfire, like a long red dragon, slowly emerged from the Tianyue Mountains.

Above the mountains, blue smoke rose and flames blazed.

Li Chengfeng ordered that this mountain will burn for three days and three nights, and the flames cannot be stopped.

As a scientific research genius in the 21st century, Li Chengfeng also has a lot of research on geology.

He observed the Tianyue Mountains, which belonged to hard soil, with many rocks in the middle. It is better to use the method of thermal expansion and contraction. The mountain expands, then shrinks, and finally cracks.

If it is loose mud and soft soil, this method may not necessarily work!

…

After walking down the mountain range, Li Chengfeng looked back, then yawned and walked forward.

Last night, he worked all night and didn't sleep all night. Now he feels sleepy.

Along the way, Li Chengfeng met Li Shimin, and Li Shimin stopped Li Chengfeng with his hand.

Li Shimin said: "Feng'er, didn't you come to dig the Tianyue Mountains? How do you use fire? Will it work?"

Holding his own doubts, Li Shimin asked.

It was not only Li Shimin who asked the question, but also the ministers and common people on the side were full of bewildered expressions.

Because, when Li Chengfeng burned the mountain, he only burned a gap, not the whole mountain range? No one understands why Li Chengfeng did this!

Li Chengfeng said: "That's right, an interesting physical phenomenon called thermal expansion and cold contraction, do you understand, Father?"

"Expanding with heat and shrinking with cold? This...haha~lightnovelpub.net~ I don't understand!" Li Shimin smiled and shook his head.

Li Chengfeng said: "It means that when an object is heated, its volume will expand, and after it is cooled, its volume will shrink! Then the atomic structure in it will undergo some changes, which is probably like this! Well, I went back to sleep, what…"

Li Chengfeng yawned.

But what Li Shimin said was dumbfounded.

Because Li Shimin couldn't understand Li Chengfeng's technical terms at all.

In order not to appear to have a low IQ, Li Shimin could only nod his head and praise Li Chengfeng that you are awesome and know so much!

"But Feng'er, does your method really work?"

"I don't know, whether it works or not, we'll see in three days! If it rains and puts out the fire, it's hard to say!"

"Farewell, father, I'm sleepy, I'll go back to sleep first!"

"Okay, then you have a good rest!"