Tie the horses onto the carriage and put on the reins.

Li Zheng and Daniu left the horse circle.

After they walked away, Li Jiangshan came to the small house next to the horse circle, and the door here was not locked.

On weekdays, I don’t lock the door here. When I walked into this hut, Li Jiangshan came to the table. This is where Li Zheng had just written something.

When ink seeps into the paper, some traces will be left sporadically, and some traces of ink will be left on the table.

Take out a clean sheet of paper, and Li Jiangshan put the paper on the table.

After bonding, apply a layer of oil to the paper as thin as a cicada wing.

Gradually, some handwriting appeared, which was vague but could still see clearly what was written.

Li Jiangshan observed these handwritings and found some strange symbols.

It looks like text, but it doesn't look like text.

Some of them are like the mathematical formulas of Jingyang Academy.

But I can't understand it.

Li Jiangshan copied all the symbols of these characters as quickly as possible, cleaned them up and left quickly.

After leaving the village, Dahu drove the carriage and looked back at Li Zheng.

Li Zheng was still looking at the chemical formula he had written.

"Chang'an Order, what are we going out this time?"

Big Hu asked.

Li Zheng put away the chemical formula he wrote and said, "Do you remember the first time we made fireworks?"

Dahu nodded vigorously, "Of course I remember."

Li Zheng said again: "It can come in handy now, so go to the old place where we collected saltpeter before."

After the talk, Li Zheng said again: "Collection of more useless stones to cover up your eyes and ears."

Gunpowder is a Pandora's box.

It is likely to be out of control after opening it.

Once cold weapons enter the hot weapons, under huge lethality, the hot weapons will increase the tragic level of the war by several levels.

The war will become even more tragic.

Human lives will also become more vulnerable under thermal weapons.

Gunpowder is the beginning. The repeated changes of gunpowder will cause the thermal weapons to iterate continuously, thus increasing the lethality of the thermal weapons step by step.

So much so that in the future, people have to limit a certain weapon in exchange for peace.

Of course, I don’t want to hand over gunpowder to Li Shimin now.

People should have their own trump card when they are alive.

Li Shimin is not such a kind person.

If you really fight Li Shimin to the death, you will be able to blow up his palace.

Li Zheng was confident.

When I came to a barren mountain, Chang'an was close to Longyou, and the foothills here were very desolate.

An old saying goes, "Saltpeter comes from the Long Road"

The saltpeter in Guanlong Road has always been relatively abundant.

There is no vegetation on this mountain because it is actually a saltpeter mine.

These saltpeters are enough to make tens of thousands of tons of strong gunpowder.

I saw that there were many villagers here who were digging saltpeter here.

Dahu explained: "Since people in Chang'an learned to use saltpeter to make ice, people often come here to collect saltpeter."

Saltpeter does not account for a large proportion of gunpowder.

Li Zheng turned over and jumped out of the carriage, and started digging saltpeter with Dahu.

The villagers all come from around Chang'an, and they don't know that the people who dig saltpeter with them are the people who come up with the saltpeter ice formula.

After Li Zheng and Dahu had already dug up three bags of saltpeter and left.

Someone said, "It seems that the person who just dug the mine with us has seen it somewhere."

The old man next to him smiled and said, "Everyone has one mouth, one nose, and two eyes. Look, where have you seen anyone?"

"I really saw that young man just now. It seemed to be the day Princess Changle got married."

"Can't it be the newly promoted Duke of Jingyang County."

"How is it possible? How could the dignified county lord come here to dig saltpeter."

"It seems to be the Duke of Jingyang County."

...

Just as people were speculating, a eunuch from the palace came by horse, "Have you been here just now in Jingyang?"

As soon as these words came out, the villagers became quiet.

It's really the Duke of Jinyang County.

Li Zheng and Daniu came to another wasteland, where there was only one yellow sand and no crops.

Dahu looked back and said, "Chang'an Order, it seems that no one is following us."

Li Zheng got off the carriage and said, "Dig some sand."

"good!"

Dahu followed suit and looked around vigilantly.

Filled with a bag of sand, Dahu rode his horse again and asked the horse to pull the carriage away.

Half an hour later, several eunuchs appeared where Li Zheng had just arrived.

Take out a brush and write down what Li Zheng has done here under a bamboo slip.

Then he headed towards Li Zheng leaving.

That night, Li Shimin finished the memorial that needed to be approved today.

Wang Ding took a memorial and said, "Your Majesty, Chang'an order has left Jingyang today."

Li Shimin took the memorial and watched.

Wang Ding whispered: "The movements of the Chang'an Order are written on the memorial."

After reading it, Li Shimin was a little confused, "Saltpe, sand, wood, mud..."

"There is charcoal?"

After reading it, Li Shimin pondered for a long time and asked, "What do Li Zheng want these things to do?"

Wang Ding bowed and said, "Go back to Your Majesty, Chang'an Order has returned to Jingyang with these things. As for what he is used for, he has sent someone to investigate. I believe there will be news soon."

Li Shimin put down the memorial and pondered for a while, "You sent someone to bring me a copy of what Li Zheng had been to."

Wang Ding bowed and said, "Here! Let's make arrangements now."

Li Shimin stood up and walked out of the Ganlu Palace. Looking at the empty darkness, he thought in his heart how many things there were hidden in Li Zheng that I didn't know.

How did Li Zheng plan to resist the Eastern Expedition of the Great Cannibal?

Li Shimin came to Lizheng Hall and also saw Li Jiangshan's letter.

Empress Changsun sat aside and took care of Gao Yang's hair and said, "This is sent by Li Jiangshan, and I don't know what Li is doing."

Li Shimin looked at the letter suspiciously, frowned as he looked at the words on the paper.

Some of the words here can be understood, while some of them cannot be understood at all.

Li Shimin looked at it for a long time but couldn't understand the formula above, "What words do you think are Li Zheng's writing?"

After combing Gao Yang's hair, Gao Yang followed the palace maid to leave.

Empress Changsun whispered: "I can't understand either, so I might as well let Kong Yingda see it. Kong Yingda may be able to understand it."

On the second day, Li Shimin asked someone to send these formulas from Li Zheng to the Imperial College.

After his granddaughter got married, Kong Yingda was not in a good mood. He was mainly from a scholarly family. He married his granddaughter to the son of a martial artist, and heard a lot of gossip on the chain of contempt.

Wang Ding handed a letter to Kong Yingda, "This is what His Majesty ordered. I don't know if the old Master Kong Yingda knew the words."
Chapter completed!