TNT is a very stable explosive, it has a high ignition point, does not corrode metal, and does not change for a long time below 100 degrees Celsius.

But it is very toxic and can enter the human body through the respiratory tract, digestive system, skin. Then destroy your bodily functions little by little.

To this end, Jiang Wei also needs to prepare protective measures, as well as prepare a suburban research and development site, which is a bit unsuitable in the densely populated residential places in Chang'an.

Protective equipment Jiang Wei couldn't find too good equipment, so he could only paste a layer of pine sap inside his clothes and then dry it, so that he could isolate the poisonous gas, although it was very uncomfortable to wear.

Then there's the hood, and then there's the eye and face protection. A huge glass with an uneven face, glued with mucus and cloth, made into a hood, behind the hood, and made a cloth pipe of more than ten meters, because of the resin, the cloth pipe will not be completely flattened and cause inability to breathe, at the end of the day, he finally made the most rudimentary protective measures. But it didn't take long for many thin seams to appear between the glass and cloth bonding, and we had to wait for the equipment to be upgraded later.

But then Jiang Wei was a little confused.

Because of toluene.

When it comes to getting toluene, it is easy to obtain coal coking. But it also needs to be done.

Although half of the chickens were sold yesterday, the villagers earned a total of more than 40 yuan a day, and Jiang Wei's dividends also received two yuan, which is not less. But what can you do with just two pieces of money?

If you use purchasing power, you can buy a woman for two dollars.

But Jiang Wei wants toluene, which can't be bought, so he can only hire someone to make coking carbon.

But just to make coking carbon, you have to buy coal. Although Jiang Wei now knows that the people of the Tang Dynasty also used coal, although the scope of use is very small, the metallurgical and ceramic industries use coal as fuel, because it is cheap, and there is no need to worry about purchasing coal.

But this is a lot of consumption, and it even feels like putting the cart before the horse. After all, a meal of coal can obtain about two catties of toluene.

But for Jiang Wei, this is the only way to get toluene. Other methods, in Datang, where the infrastructure is backward, simply cannot be realized.

After thinking about it, I can only sell coke subsidies, otherwise I can't afford toluene alone.

Not to mention recruiting people, it is to recruit ten people to coke, and you have to need 3,000 wen every month, and 1,000 wen is consistent. He can recruit up to twenty people to help him for a month. And that's not even counting the money for the purchase of infrastructure.

At first, the idea was good, but after careful calculation, I found that I was particularly short of money. It's hard to do anything.

Jiang Wei thought about it, and finally gritted his teeth and found Han Gao,

"Childe, what do you command?"

"How many flat glasses have been burned?"

Han Gao's face was embarrassed.

If blowing glassware, he's fine. But making flat glass can be difficult for him.

"It hasn't been made yet."

Han lowered his head, a little embarrassed, after all, he has been taking other people's wages, and it has been more than half a month, and he has not made a decent one, which is considered a failure, and he really feels a little unpleasant.

Jiang Wei patted him on the shoulder, told him to continue his efforts, and left.

Sitting on the chair in the courtyard, Jiang Wei rubbed his eyebrows, and the idea of making a mirror and selling it for a sum was shattered.

Jiang Wei regretted it a little.

I regret why I didn't pay Princess Shahr at that time. Well, because of lack of money, I don't know how long I have to stop at the beginning.

Now to find Princess Shahr? Under what pretext?

Jiang Wei thought about it, took a sip of tea, and finally gave up looking for Shahr, deciding that unless there was no other way, he would never look for Princess Shahr.

Before refining toluene, Jiang Wei thought about it for a long time, and finally came up with a solution.

Jiang Wei felt that his previous plan needed to be advanced, and this was a very bold plan. Originally, it was planned to start implementing it when the time was ripe, but now that I met Princess Shahr, I had to advance it.

He didn't know if it was a good thing to be ahead of time, after all, there was a lot of preparation work that had not been done.

After dinner that day, Jiang Wei took the initiative to find his uncle, Xu Xiaode, for the first time.

At the door of the study, Jiang Wei knocked on the door,

"Who?"

"Uncle, it's me Jiang Wei."

Jiang Wei waited at the door for a moment before a voice came.

"Come in."

Pushing open the door, I saw Xu Xiaode sitting at the shore table writing something. Jiang Wei bowed after entering,

"Uncle, my nephew has something I want to ask my uncle for help."

Xu Xiaode put down his pen and looked at his nephew with some curiosity.

For this distant nephew, Xu Xiaode has always been curious. Talented, but somewhat out of tune, he seems to be a little evasive of officialdom, and several times he offered to send him to school, but this nephew refused.

In this regard, he did not force it.

As for the rumors from the outside world, he has also heard of them. As a Confucian education since childhood, he is also more resistant to ghosts and gods. So I don't quite agree with what this nephew did.

But he is not someone's parent after all. In addition, his promotion to the official position under these five grades is almost the credit of this nephew, and it is not easy to say much.

Xu Xiaode thought for a while and asked,

"If you have something, just say it, as long as my uncle can help."

"My nephew wants to ask my uncle to help me write a picture."

Xu Xiaode was stunned, didn't think much about it, and nodded in agreement. It's just that when Jiang Wei wrote a dog-crawling calligraphy, he couldn't help but raise his eyebrows, and the content made him a little resistant.

To be precise, Jiang Wei wrote an advertisement.

For this reason, he also asked his servant Chen Niu to find a carpenter.

Although Xu Xiaode resisted a little, he still wrote it to Jiang Wei.

"Nephew, thank you uncle, don't bother uncle."

Jiang Wei smiled and put away the paper and exited the study.

The next day, Chen Niu found a carpenter, and Jiang Wei drew a picture and handed it to the carpenter. Jiang Wei painted a wooden board, and asked the carpenter to engrave the words on the paper on the board, and the only requirement was that the words were reversed and convex font.

"How long will it take for you to make the design according to the drawing? I don't need many words right now,"

The carpenter stroked his beard and replied,

"Just give me two quarters of an hour."

"Okay."

Jiang Wei clapped his hands and happily reached an agreement with the carpenter. At the same time, Chen Niu was asked to buy 3,000 pieces of paper, which was another huge expense.

In Datang, paper is really not cheap. The cheapest is hemp paper, which costs a penny, followed by leather paper for almost three pennies. As for Shu paper, it is a high-end product, and it costs more than ten yuan.

And Jiang Wei bought hemp paper.

Then he asked Chen Niu to hire twenty people, ten wen a day, to go to Chang'an to send advertisements, especially to each of those shops.

For a while, Chang'an City was boiling again, and many powerful businessmen were almost all in their hands.

When Fang Xuanling got a piece of promotional paper, his entire brow furrowed.