Li Shimin and the three talked late that day.

Li Zhi put forward many unique insights during the conversation.

For example, the ownership of the land of the temple should be taken back, and all those who join the temple should give up the land in their hands.

In this way, it is effective to prevent young and middle-aged laborers from running to the temple to become monks in order to avoid hard labor.

At the same time, he also believed that the way the temple was run should be defined as business, and a certain amount of tax should be levied on them.

It's just that there are too many interests involved in this matter, and Li Shimin still needs to study it carefully.

However, another idea put forward by Li Zhi was that Li Shimin and Sun Simiao both agreed very much.

That is to build a special medical academy and invite famous doctors from all over the country to teach here.

At the same time, it is also necessary to organize the compilation of a medical book to pass on the medical essence of Datang.

Li Zhi also proposed that these doctors should be given formal official treatment and that their social status should be thoroughly improved.

Li Shimin originally had doubts about this article.

He opened his mouth and said: "I am afraid that a large number of conferral officials will cause dissatisfaction among some ministers! ”

Unexpectedly, Li Zhi said directly: "Whoever dares to stop it, then let the doctors all over the world not treat him, and see who is the head." ”

Li Zhi's domineering appearance directly made Li Shimin and the two laugh.

But his solution was a good idea.

After Li Shimin agreed to establish a medical school, he strongly invited Sun Simiao to be the first person in charge.

Sun Simiao resigned for a long time before agreeing.

Because Empress Eldest Sun was about to give birth, Sun Simiao temporarily lived in the Tai Hospital.

In this way, Li Zhi has more opportunities to contact him.

During this period, Li Zhi not only learned a lot of prescriptions and the so-called alchemy, but also took the opportunity to ask questions to imperceptibly reveal the theories of refining the essence of medicine and surgery to Sun Simiao.

Sun Simiao stayed in the hospital for more than half a month, and he did not leave until Empress Changsun gave birth successfully.

Next, he will set up a medical school, welcome famous doctors from all over the world, and recruit students.

And Li Zhi began the research of black powder alone.

With Sun Simiao's endorsement, he could blatantly ask Liu An to help him collect materials for making black powder.

Although these materials are very different from what Sun Simiao said, he can easily fool the past.

Li Zhi asked Liu An to find some expensive cane sugar in addition to the most basic saltpeter, sulfur and charcoal.

According to Liu An, these candies were sold by merchants from Tianzhu to Datang, so the price was very expensive.

After hearing this, Li Zhi immediately pursed his lips disdainfully and thought: It's just simply processed brown sugar, which can be sold at a high price, and people really haven't seen anything good now.

Of course, he didn't let Liu An see this action.

He had already made up his mind, and when the research on black powder was completed, he would easily summarize the manufacturing methods of refined salt and sugar.

When the time comes, not only will the people of Datang be able to use better salt and sugar.

It is also necessary to export these things in reverse to other countries and make a lot of money.

In order not to arouse the suspicion of others, Li Zhi delayed for several days before preparing the materials for black powder.

On this day, he took out the mixed black powder and said to Liu An: "You go find a few empty wine jars, let's make a few good things." ”

Seeing the mystery of what Li Zhi said, Liu An couldn't help but ask with some doubts: "Your Highness, what exactly needs to be used in the wine jar?" ”

Li Zhi said: "Don't worry about this for now, when something is made, it will scare you." ”

Liu An saw that Li Zhi didn't say anything, so he didn't ask anymore, and went directly to the empty wine jar honestly.

Taking advantage of this, Li Zhi made a few long leads out of rice paper, ready to be used to detonate black powder.

Liu An's movements were very fast, and it didn't take long for him to bring four in one go, each of which could probably hold two catties of wine.

Li Zhi saw that the size was just right, so he and Liu An were busy.

They first filled the jar with gunpowder, and then made a small hole in the lid of the jar.

Finally, the lead was threaded down the lid into the jar.

When everything was done, Li Zhi said, "You go and set up a carriage, and the two of us will go outside the city." ”

Liu An suddenly became nervous when he heard that Li Zhi was going out of the city.

He frowned and dissuaded: "Your Highness, it is very unsafe in the wilderness outside the city, so it is better for the slaves to go by themselves." ”

Li Zhi said: "We don't have to go too far, we just need to find a secluded place outside the city." ”

Liu An was still a little hesitant, he was just about to open his mouth to persuade again.

I heard Li Zhi say: "The temperament of this thing has not been figured out yet, and you need to witness it with your own eyes to know the effect." ”

After hearing this, Liu An took a deep breath and said, "Since His Highness is so insistent, the slave will accompany you on a trip." ”

At this time, he had secretly decided that once he encountered danger outside the city, he would desperately stop the thieves and let Li Zhi run first.

In this way, Liu An took Li Zhi to the outside of the city with fear.

Li Zhi casually found a vacant land overgrown with wild grass and asked Liu An to stop.

After Liu An parked the car, he found that it was indeed not very far from the city gate, and a hanging heart finally let go.

Until now, Li Zhi hadn't told Liu An what he was doing.

He asked Liu An to place a wine jar far away in a bush.

Because the wild grass on the ground was too messy, it was inconvenient for Li Zhi to move inside.

So he could only hand over the work of lighting the lead to Liu An.

Liu An didn't know the danger of explosives at the moment.

He just lit the fuse in strict accordance with Li Zhi's explanation, and then quickly ran back to Li Zhi's side.

At this moment, Li Zhi suddenly said to him: "Cover your ears quickly." ”

After saying this, Li Zhi took the first step to cover his ears.

Liu An's reaction was a step slower, and he had just covered his ears when he heard a loud "boom".

The sound almost scared him to his knees.

Then he was shocked to see a cloud of dirt rise from the place where the jar had been placed.

It was accompanied by a burst of fire and smoke.

Liu An twisted his head in Li Zhi's direction with some stiffness.

It was found that Li Zhi did not seem to feel any fear.

He asked in shock, "Your Highness knows that this thing will explode?" ”

Li Zhi replied as he walked towards the place of the explosion, "I guessed it." ”

Li Zhi would not say that he knew that this thing would explode, otherwise it would seem that he was too amazing.

At this time, even Sun Simiao, who was proficient in this way, only knew that this thing might explode, but he had not yet summed up the formula for gunpowder.

Strictly speaking, Li Zhi can be regarded as plagiarizing one of Sun Simiao's merits in person, and has also made some improvements.

Liu An saw Li Zhi walking towards the site of the explosion and hurriedly ran in front of him.

At the same time, he reminded: "Your Highness be careful. ”

Li Zhi smiled and said, "Don't worry, it won't explode anymore." ”