In fact, he did know, and besides, he gave the emperor the advice to use fireworks.

However, what if you tell Leng Feng about this, Leng Feng can't control his mouth and tell others?

Forget about other people, if Wei Zheng knew, the emperor would definitely feel uncomfortable.

Seeing that Zhang Zhongqing didn't speak, Leng Feng patted him on the shoulder, "Lao Zhang, if you reveal it, I will tell you the use of a landmine, it is definitely yin enough, believe it or not." ”

Regarding landmines, Zhang Zhongqing already felt that he was perfect, and now when he heard the use of Leng Feng and landmines, he immediately looked forward to it.

But

Seeing Zhang Zhongqing's momentary hesitation, Leng Feng hurriedly said, "Actually, you don't need to test it in war, you just look for me, no matter what you research, I can help you make it perfect, as long as you say, no matter what you study in the future, I can help you improve, how about it?" ”

For Zhang Zhongqing, this temptation is a bit big!

"On call?"

"Always on call!"

Anyway, after becoming the secretary of the military department, Leng Feng will no longer go to the field casually, rather than having nothing to do in the afternoon when he has no official business, it is better to occasionally help Zhang Zhongqing improve his various weapons.

At least in Leng Feng's opinion, many of the things that Zhang Zhongqing made up were not suitable for formal warfare.

Zhang Zhongqing lowered his head, the lazy Leng Feng put forward such a condition for the first time! It's a lie to say that you can't be impressed.

But

Not only that! That's it! The next time I let Leng Feng agree to this matter, I don't know what year and month it will take!

"The emperor asked me to make fireworks, in fact, I wanted to meet the queen, the queen went to Jiucheng Palace in a bad mood, and the emperor wanted her to come back, so she couldn't make a holy decree!"

After all, the queen is his wife, and the emperor also has to give the queen a certain degree of respect.

"It turned out to be for the queen!"

No wonder it's so sneaky and not let people know, the emperor shows softness to the queen, the less people know about such things, the better!

Zhang Zhongqing hurriedly said, "If you know, keep your mouth shut, don't tell anyone, if it leaks out, Your Majesty will definitely clean me up in anger!" ”

Leng Feng nodded, "Don't worry, you can't find anything tighter than my mouth in the Tang Dynasty, go, I'll teach you how to use the Mine Yin Man." ”

Zhang Zhongqing's mines are not as sensitive as modern mines, and as long as the enemy is careful, they can still be removed. Regarding sensitivity, Leng Feng couldn't give advice, but he knew too much about Yin Ren's methods.

As long as you stack another mine on top of it, when the enemy dismantles the mine, the lower one will be activated, and when the time comes, the mine that is picked up will also be detonated, which is definitely the simplest, but also the most insidious means.

Looking at the picture drawn by Leng Feng, Zhang Zhongqing said, "If you want to deal with it, there is a way, as long as you detonate it in advance like you did before?" ”

Just when he saw Leng Feng throwing stones to detonate his hidden mine, Zhang Zhongqing discovered the disadvantage of this excitation gunpowder weapon, that is, the enemy could trigger it from a distance and step through the pothole.

"You're stupid, don't you just make the dumb fire type above?"

In this way, Zhang Zhongqing got a long-lost opportunity to chase Leng Feng and ask.

After coming out of the Thunder Division, Leng Feng did not go home and went to live in the new mansion in Chang'an. In the cold mansion of the manor in the world, without Liu Shuwen and the two eccentric children, he would feel bored even if he went back.

What's more, in order to make it easier to "go to work", he also has to make a family in Chang'an.

Chang'an's Leng Mansion is also built in Xiudefang, not far from Tianxialou, because there is no one at home, Leng Feng went to Tianxia Upstairs for dinner.

At night, the downstairs looks a little deserted, because of the curfew, if you have to eat at night, you will also eat while watching the sky. As soon as the quiet street drum sounded, I had to go home.

Otherwise, the Marquis of the night patrol will punish them, and those who can even be put in prison for interrogation.

Although it is deserted, there are still some people. When Leng Feng passed by a box, he found that there were actually two acquaintances inside.

Fan Shen and Hao Wencai.

Fan Shen also saw Leng Feng, and hurriedly opened the half-open box door and invited Leng Feng in, "It's almost curfew, and you can still see Gong Xi Guo, it's strange, if Gong Xi Guo is fine, how about you come in and have a drink?" ”

Leng Feng entered the box, found a seat and sat down and said, "Just drink, I never drink except for big things, but I want to rub you to have a meal." ”

Hao Wencai laughed and said, "This is unbelievable, what does Gong Guo want to eat, we have invited." ”

After the waiter brought Leng Feng dishes and chopsticks, Leng Feng asked, "What are you two studying here?" ”

Fan Qi arched his hand and said, "Actually, we are studying how to transport cement to the south, cement is easy to enter the water when transported by boat, and it is too delayed to transport it by land." ”

Leng Feng nodded, because of these two points, although there are already some cement roads and cement houses in the north, there are no concrete houses in the south.

Fan Shen's first business was river transportation, and judging from the two of them getting together, they finally chose water transportation.

"So how are you going to solve the problem of water ingress into the cement?"

Leng Feng was curious, there is no plastic sheet or anything, how can they be waterproof?

Fan Yuan smiled, "Actually, it's very simple, just open the building boat, the three-story building boat, put the cement in the middle layer, you are not afraid of the water under the boat and the rain in the sky." That's a bit of a waste, so the price of cement to the south may be higher. ”

If you are a boat, if you encounter a place where the current is gentle, you even need to pull the boat, they are not officials, and they can't use the "tune" of the imperial court, so that the slender man can pull the boat, and they have to give money to others.

"Xi Guogong, we plan to partner to open the cement market in the south, do you want to join a share?"

"Stake?"

Leng Feng hurriedly shook his head, what are you kidding, selling cement to the south must be a big deal, he is still worried that he is making too much money, why do you want to buy shares?

Fan Yuan suddenly said, "Gong Guo, have you noticed that in fact, attracting people to join the shares is also a way to make money." As long as there is capital, you can promote the rapid development of a transaction, but at the same time, as long as the person who buys the shares is divided, do you say that you want to base on this"

Cold Front ""

Can he say that he is worthy of being a descendant of the Fan family? He can also come up with this thing about the stock market.

"This method of making money is still not necessary, don't forget, doing business is not necessarily a simple way to make money, it is possible to lose money, people who taste the sweetness once, the next time is likely to press all their net worth, if the transaction fails, the person who invests in the shares will go bankrupt."

Fan Yuan nodded, isn't that how business is done?

Leng Feng took the egg fried rice brought by the waiter, and said while eating, "You can be regarded as reminding me, this article must be added to the new business law in the future, no one can get the stock market, just call this, no one can get the stock market, I don't want to see a group of people hanging themselves." ”

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