The weather was cold and the north wind was bitter. Just after the New Year, a cold air coming from the north hit Chang'an City. For a time, the sales of honeycomb coal increased significantly. The No. 100 merchants in the workshop were divided into two groups to alternately build honeycomb coal. Two days later, the Shangyuan Festival was the Shangyuan Festival. Before the Shangyuan Festival, the Ning family had to send the 15,000 honeycomb coals that were named and collected by the inner government. Now the Ning family's business is getting bigger and bigger. Not only the Chai family, but also the Cui family's 50,000 honeycomb coals, but also the inner government is also increasing the dosage. According to Cui's man's words after drinking, the Ning family's honeycomb coal has been sold to places such as Goryeo and Baekje.

Since Erya became pregnant, she has been very sensitive to the smoke smell of honeycomb coal. Not only does it feel uncomfortable for the smell, but it is mainly allergic to carbon monoxide, including Ning Wen. So now the three honeycomb coal stoves have been moved to the pavilion in the middle of the yard, and Ning Wen is happy to be free and easy here.

Taking his hands and toes to calculate the Ning family's assets, Ning Wen has always used rough data to calculate it. Although Guo Enxiong has very detailed numbers, the numbers in the account book are not as comfortable as he estimates for Ning Wen.

The new tea from Lingnan was soon shipped to Chang'an. In the past year, in addition to the ones prepared for Yuan Huai, there were more than 1,000 kilograms of top-grade green tea, and more than 2,000 kilograms of authentic Baihua Dew. As for Gui's coal mine, according to the letter from Uncle Li, almost all households and businesses on the ground in Lingnan with a radius of hundreds of miles centered on Gaozhou, Lingnan has used honeycomb coal stoves, and cooking and other things have completely bid farewell to charcoal. The wood is just a place that requires great firepower such as banquets and restaurants.

Yuan Huai had not sent a letter yet, and Ning Wen was a little worried. He always felt that the personnel changes in these small countries were too fast. Maybe one day Yuan Huai came to the Tang Dynasty to take refuge again, earning tens of thousands of yuan a year. Ning Wen planned to find a way to send a letter to Yuan Huai, and he was in a state of lingering.

I reached out to ask for a piece of high-end white paper. Now the products of the paper workshop are getting better and better, the thickness has decreased, and the water absorption is also well controlled. Du Gou said that the inner palace invited a master who was the supervisor and added some glue to the pulp. It seems to be fish glue or something. The name is hard to remember. Anyway, the butt is not as comfortable as before, and it is harder.

The honeycomb coal stove can also be improved. Ning Wen drew a huge circle and made of iron sheets. Twenty honeycomb coals can be placed in it at one time. In this way, the live flame will be much stronger than the firewood stove. This is also a solution created by later generations in places without natural gas.

It is rare to have such a leisurely time, and the weapons supervision matter is still in the test stage, but what is very inspiring is that the flowering projectile has been developed. The very simple one is to cast a thin-walled hollow projectile, leaving a hole the size of a thumb, stuff gunpowder and iron lumps into the projectile, and then fill it with tinder velvet to fill it with small holes. The tinder velvet will ignite the tinder in the barrel, and after the projectile is out of the bore, it will burn all the way until the gunpowder inside the projectile is ignited, so the projectile will explode due to pressure.

I don’t know if it will be successful or not, and I haven’t tried it yet. If the manufacturing process and principles can be synchronized, there will definitely be no problem.

This is a big deal. If the Tianwei Cannon is an epoch-making creation, then the flowering bullet is the crown of the new era. Ning Wen wants to take it down for the entire Tang Dynasty and reduce the casualties of soldiers.

Just wait for Master Zhou's injury to heal. As the iron smelting furnace is about to be completed, the Lantern Festival will be increased and the operation will be started. In three months, twenty cannons, it seems not very difficult now. The main reason is that Master Zhou's injury is somewhat beyond Ning Wen's expectations. Sun Simiao's medical skills are extremely admired. Ning Wen probably has no chance to get the Ning family, but it is estimated that it is very popular to find a way to make Sun Shenxian tamper with some battlefield medical rescue.

These were given to Li Chengqian. Ning Wen did not intend to take credit for himself. Now Li Chengqian is no longer as good as before. In addition to the inner court, there are places where Li Chengqian can speak in the court. Naturally, Ning Wen always refuses. Ning Wen doesn't plan to stand out in this matter, so let Li Chengqian lead the way.

"Sir, why are you drinking here alone?"

Guo Enxiong came from outside the yard, patted the snowflakes on his shoulder, picked up the wine pot warmed from the wine jar, and brought wine to Ning Wen. He sat aside and asked casually.

"think!"

Ning Wen drank a sip of wine. In the cold winter, he sat alone in the pavilion, with three warm wine in his hand, and one close friend beside him, and there was no taboo to talk about everything. This would make you happy.

Guo Enxiong picked up the artworks on the stone table, frowned slightly, and complained:

"Why should I give such a great achievement to Your Highness? Is the Lord thinking about it or doing it intentionally?"

"I mean it? Haha, just being lazy. Ning has become the target of public criticism now. He always stands at the front desk, so tired!"

Ning Wen picked up the wine bowl casually, took another sip, glanced at Guo Enxiong, and said lightly.

"Haha, not bad, not bad, it should be like this. I think the Lord has a way to break the deadlock?"

After drinking some wine, the whole person became warm. Ning Wen cleaned up a stack of drawings on the stone table and planned to go to the prince's side. He had to make the iron while it was hot, so that those who were jealous would be more restless.

Ning Wen greeted the wife and son in the house. Just as he was about to go out, he asked Sangouzi to block the door.

"Sir, the princess has been killed!"

"What!"

Gao Yang's little loli came, and she actually brought her dead tail. She hadn't seen her dead tail for a long time. The wild dog seemed to have restrained her temper and followed Gao Yang with a thump. When she saw Ning Wen, she came up and learned to wag her tail. Ning Wen still didn't dare to be careless, but she just teased her dead tail with her feet. She was scared. I wonder if this dog still remembers the hatred of killing her husband.

"Ning Wen, is Zhinu coming?"

I haven't seen each other for a long time. Gao Yang has grown taller and looks more and more beautiful. He is wearing a decent brown fur coat and holding this dog in his hand. He must be a grandson with a broken tail.

"Zhinu didn't come here, what happened?"

Seeing that Gao Yang was a little anxious and didn't know what was going on, Ning Wen turned around and was about to ask Sangou, but saw Sangou shook his head.

"That's strange. Zhinu told me that he was here, so did this person, and he was so whispering."

Gao Yang has had a temperament since he was a child, desire to control the people around him wherever he goes.

"Maybe I've gone to play somewhere, I've probably returned to the palace now!"

I am not worried about Li Zhi's safety, but it is a prince no matter how much I say. Nowadays, social security can be considered peaceful, and in short, nothing will happen.

"I'm so angry, let's go!"

After no trace, he looked at the dust that was rolled up when Gao Yang's frame left, Ning Wen felt emotion. This loli is really an uneasy person. Let's stay away from him in the future. Li Zhi probably came to find his own banner at a discount. Maybe he did something bad. Ning Wen did this when he was a child.

It was still early, so I ordered Sangou to prepare the frame and rushed to the East Palace to deliver things to Li Chengqian.

"All these are Ning Wen's work? No wonder Yan Liben, the assistant minister of the Ministry of Justice of this dynasty, highly praised Ning Wen. Looking closely, this stroke is indeed unique."

Li Chengqian was not interested in the things on the drawings, but became interested in Ning Wen's work. Yan Liben was thinking about it by chance. Ning Wen had also heard of Yan Liben's name. A painting from later generations could be worth tens of millions of dollars. He was itchy. He wondered if he would let this guy draw dozens of paintings for himself and then wear them back. He would make a fortune!

"This is made of charcoal pen. Please see the prince. This is charcoal pen!"

Ning Wen carried a charcoal pen with him, which was much easier to use than before, and the size was very suitable. The refill core was different from what Ning Wen invented. Now he actually used graphite. The pencil made of crushed graphite mixed with clay was released hundreds of years ahead of Ning Wen.

Li Chengqian took it in his hand and looked at it carefully, and tried to write a few words. Without saying it, Li Chengqian actually learned it without a teacher. The posture of holding the pen is very standard, and the angle and strength of the pen are also very suitable. After a while, he wrote a whole article, but the font is a bit irregular. For a moment, Li Chengqian became obsessed with pencil calligraphy. It seemed that he wanted to invent a font suitable for pencil writing!

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Chapter completed!