The big dog sat down again with its tail shaking, and it seemed to have calmed down.

The first trial of fireworks was not very successful. After the magnesium exploded through the high temperature of gunpowder, the fireworks burned out were very small, and it felt like it could not be dispersed, with only a few sporadic moments.

However, since you can successfully try it, the next step is to adjust the ratio of gunpowder to magnesium.

I remembered Li Shimin's gift again.

One is proud of the meaning of the other.

Li Shimin likes obedient ministers, and most of them say that the emperor likes obedient ministers.

Especially those who are capable and obedient.

What Li Shimin wanted was such a minister.

Many people like to take the word "loyalty and filial piety" as a sign.

Some even lived as foolish loyalty.

Li Zheng didn't like to give his life to an emperor in his heart.

Treat the emperor as someone more important than his family?

A person can give everything for his family, for his relatives, and for his parents and children. This is the most basic human nature.

As an emperor, he needs his absolute loyalty to him.

Even Xu Jingzong and Li Yifu, these two people followed him for so long.

In fact, they also have little thoughts in their hearts, and following them is just for their own interests.

On the contrary, people like Li Yifu and Xu Jingzong live very realistically and clearly.

Pour yourself a cup of tea, Li Zheng looked at the east sky and waited for the arrival of dawn the next day.

The next morning, Li Tai got up early and went to court.

After breakfast, Li Zheng handed Dahu a list.

"As I wrote above, collect some."

Dahu glanced at the things on the list and put them away.

"Don't need too much, and don't attract too much attention." Li Zheng reminded.

"I understand." The big tiger turned over and rode a horse and left.

It was very windy in late autumn, and Li Zheng picked up a thick coat. This coat was a bit like a military coat from later generations, with mink velvet on the collar.

After cooking a pot of water and soaking a cup of hot tea, Li Zheng spread out the paper and began to outline the appearance of the fireworks.

Xu Hui came with the account book and saw Li Zheng sitting next to the horse circle from afar.

Li Zheng, who has a hairpin, looks much more energetic and more dignified than before.

In the past, Li Zheng had to combed a ponytail and his hair was not neat.

Now that I have combed my hair, Li Zheng’s face has become much cleaner.

It looks quite comfortable at this point.

Some random buns look like they are as casual as they used to be.

The cold wind blew, and Xu Hui felt aroused and realized that she had been watching for a long time.

A blush flashed across his face, and Xu Hui stepped forward and said, "Chang'an Order, this is the account book for this month."

Recently, the market has seen much less business than before.

Li Zheng nodded at the account book. Once the soap is fresh, it becomes a daily necessity.

People won't buy in large quantities.

Although braised pork is the only one in Jingyang Fang City, the business has not improved much compared to before.

Xu Hui whispered: "Chang'an Order, the little girl has an idea that she doesn't know whether to speak or not."

After taking a sip of tea, Li Zheng said, "You talk about it first."

Xu Hui said: "Why not add shops? For example, open a house in another place."

"What do you mean is opening a branch?"

Xu Hui nodded, "It should be the meaning of the branch."

"I don't have this idea yet."

After reading the account book, Li Zheng said to Xu Hui: "How is the new road in Jingyang compared to the old official road in Chang'an?"

Xu Hui thought for a while, "Now there are more and more people walking on our Jingyang New Road, but there are not many people walking on the official road."

"Please pay attention to how many merchants pass by our Jingyang these days."

"Understood."

Seeing that Xu Hui had not left yet, Li Zheng put away his pen and said, "Is there anything else?"

Xu Hui said with a little twisted voice: "Congratulations to Chang'an Order for Adulting a Crown."

After saying that, Xu Hui took the account book and left quickly.

"Why is this little girl weird today?" Li Zheng muttered.

I calmed down again, looked at the design drawing in front of me, and saw the fireworks of later generations, but it was another matter to do it yourself.

"Xu Hui is a good girl."

A sudden voice was shocked, and Li Zheng looked back and saw Li Jiangshan.

"Sister Killer, can you stop appearing behind me suddenly?" Li Zheng said.

"The queen asked me to bring you a message."

"Tell me."

Li Zheng picked up the cup and took a sip of tea.

Li Jiangshan held the Hengdao and said, "The queen asked someone to tell me that it was a matter of marrying the princess to prepare you early."

Li Zheng said in confusion: "What else should I prepare for marrying a princess?"

As he said that, he thought that the business of buying and selling weapons would give Li Shimin more than 100,000 chunks of money every month, and his annual income was comparable to the annual taxes of the Tang Dynasty.

"I don't know what to prepare, but that's what I said."

"that's all?"

Li Jiangshan nodded.

Li Zheng: "I received the words of the queen."

He looked at Li Jiangshan again, and Li Zheng said again: "Sister Killer, when did you come?"

Li Jiangshan said with a cool look on his face: "When I came, Xu Hui was watching you there."

Li Zheng glanced at the direction of Li Jiangshan's look, and then looked at Li Jiangshan strangely.

Li Jiangshan turned his head and said, "You look quite comfortable when you wear a hair crown."

Li Zheng said sadly: "Is there anything else that the killer sister has?"

"No."

"Sister Killer, please."

Li Zheng continued to think about the drawings of fireworks, and the barrel of fireworks needs to be firm.

The material of the cannon barrel can be replaced by a bamboo barrel, which is the most convenient way.

Li Jiangshan had just left, and Li Yi's mansion came.

"Chang'an Order, Master Kong Yingda is here."

"Please come in."

Kong Yingda came to the horse circle, looked around and said, "I haven't been here for a long time, the changes in Jingyang are really turning upside down."

"My Master Kong Yingda is a rare guest. Why do you have the leisure to come to me today?"

Li Zheng enthusiastically poured Kong Yingda a cup of hot tea.

Kong Yingda smiled and said, "Yesterday you were a grown-up student, and I didn't have time to congratulate you in the court."

"You are a great scholar at that time, and you dare not let me worry about you."

Looking at the thing drawn on the paper on the table, Kong Yingda asked curiously: "Is this?"

“This is a drawing.”

"Drawings?" Kong Yingda looked carefully, "Your drawings are novel."

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"This is a new way to draw drawings in Jingyang." Li Zheng pointed to the dots and lines on the drawings and said, "You always look at it. This mark is diameter, this is radius, and this height."

Kong Yingda smiled bitterly, "Li Zheng, all your new knowledge is handed over to your children in Jingyang."

"certainly."

"There is also science to teach you."

"Yes, there are some mathematics, physics and chemistry."
Chapter completed!