"Lord, I think there's only one way to attack." Ma Jun proposed.

"It's not okay to storm it, the attrition is too great, the madman said it at the beginning." Ma Jian shook his head, and he was about to talk at length again.

Liu Feng knows Ma Jun better, he always feels that this person is very much like a scientist, if he is not sure, he will definitely not export it easily. Thinking of this, Liu Feng hurriedly stopped Ma Jian and said to Ma Jun:

"Deheng, do you have any new ideas?"

"Lord, you handed me two books before, one "Commentary on the Book of Heaven" and one "Flying Fire Technique", I studied it day and night, and finally got something." Ma Jun said.

These two books, one on the weather and the other on gunpowder and firearms, although in Liu Feng's previous life, were very commonplace, but at this time, they are undoubtedly unbelievable. It's really useful to be able to learn all of this.

"Deheng, what did you find?" Liu Feng was very excited and asked eagerly.

"The Commentary on the Book of Heaven" talks about astronomy, you can look at the weather and hydrology, march when building a city, and use it when the people give birth, but it is not needed for the time being. However, what is recorded in this "Flying Fire Technique" is quite magical. I studied it carefully, and I also made something, and it was extremely powerful when it exploded, and I verified it with Mr. Bonghyo, and there was no problem with blowing up the city wall. Ma Jun explained.

When Ma Jun first got these two books, he was firmly attracted after a cursory glance. He quickly flipped through it and felt that the book was like a gift from the gods, which was very incredible, and it felt far beyond ordinary people's cognition. However, perhaps due to the genius of the inventor, he felt that everything contained in the book seemed to be feasible. So, he tried while watching, and improved if there was something inappropriate, and after some time, he also made a few things.

"You're talking about black powder?" Liu Feng asked, as soon as he heard the "Flying Fire Technique", he understood a little bit in his heart, one sulfur, two nitrate and three charcoal, the familiar formula, if it is used flexibly, it will be very, very perverted.

That's exactly what the book calls it. This method is very artifact, three very common things, mixed together after crushing, it is actually powerful. It can be seen that there are so many things we don't know about this nature. Ma Jun said.

Liu Feng said in his heart, if he hadn't been a scumbag in his previous life, this fresh thing would guarantee that you will see it every day, and you will not repeat it until you die. The bricks and cement mentioned before must be built, this thing is simple, and it is guaranteed to scare them when the time comes.

"Madman, what are you talking about, what black powder? I've never heard of it, what kind of artifact effect does it have? Muji asked.

"Yes, I haven't heard of it either, it sounds like a medicine, can it make people explode and more powerful if you eat it?" The mad Taoist priest was well-informed, but he had never heard of it, and he listened to the previous statement and guessed.

"You crazy thing, you are just thinking about it. If this thing explodes in your body, you'll have neither of the scum left. Liu Feng said, "This is a kind of black powder, one sulfur, two nitrate and three charcoal, three things are ground and then configured in proportion, and it will explode violently after ignition." ”

"It sounds like these three things are not a rare thing, saltpeter and sulfur are abundant in the mountains, not to mention charcoal, which used to be used for burning bricks and iron, and can be seen everywhere. Is this powder so spirited? "Kurut is a blacksmith and makes iron himself, and these things are all familiar.

"Mr. Deheng, we have never heard of these things, can you let us see them?" Zhao Yun Ma Jun said, if someone else brought it up, Zhao Yun categorically would not believe it, but this Ma Jun is not very human, this person is extremely intelligent, and he will definitely not say anything.

Ma Jun nodded slightly and looked at Liu Feng, which meant to let Liu Feng have that idea.

"Okay, hearing is false, seeing is believing, Deheng, you can show it to everyone." Liu Feng may not have seen a big explosion for a long time, but he also wants to see it. In order to take the city of Taga, it will take the concerted efforts of everyone, and it must be believed by everyone.

"Okay, then please move to the countryside, otherwise it will be bad to destroy the house or hurt people." Ma Jun said.

"Deheng, do you need me to help you collect these materials?" Liu Feng asked.

"Yes, I can help too, this thing is easy to find, and it is available in the surrounding mountains." Kurut also wanted to see it, and hurriedly said.

"No need, I picked a few students in Qunu City, and they are very smart. I asked them to prepare some, but this item is a bit dangerous, it hasn't been mixed for a while, and it will take a little time to make it. Ma Jun said.

When the group arrived in the countryside, Ma Jun instructed his students to take out three kinds of powder, then estimate them, take out some of them in proportion, and mix them repeatedly on a piece of cloth.

The crowd watched and talked about it as they watched. Especially Kurut, this guy is also a little expert in invention, he approached the students, looked closely, looked at them, shook his head slightly, and never believed how powerful this thing could be.

"Can this be that powerful?" Ma Yan asked, "It doesn't look like there's anything special." ”

"I took a closer look, this thing, it may help burn, but it seems a little difficult to burst, right?" Kurut shook his head with a big belly and said.

"Immeasurable Heavenly Venerable, hehehe, I haven't seen this thing, but there are two things that we do need to use when refining pills, but this function is too far away. If it can be done, it will be truly magical. The mad Taoist smiled lewdly, he knew a little about alchemy, and he seemed to have added two things.

"Don't worry, everyone, it will be done soon anyway, and when the time comes, don't scare you out of the and pee." Guo Jia is confident, probably because he has seen it before. Seeing that everyone didn't believe it, he made a rare joke.

"Haha, hopefully. Don't sink into the sea, I like to make a big move. Muji said.

"I think Mr. Ma can do it, he is a great wisdom." Anshuo has great respect for Ma Jun.

Soon after, when the powder was mixed, several students wrapped the cloth and put it into a wooden box along with the powder and cloth, and then fastened the wooden box so that only a long lead was exposed. Seeing that it was almost done, Ma Jun asked Liu Feng and said, "Lord, the explosion box has been completed, where can we test it?" ”

Liu Feng looked left and right, pointed to the hillside in front of him, and said, "There is a boulder on the hillside over there, let's test it under the boulder." ”

"Okay, let's get over here." Liu Feng agreed and led everyone over to watch.

When he was still a few dozen meters away from the boulder, Liu Feng stopped. Considering the power of the explosion, it should be relatively safe here. But where did the others know, they still wanted to move forward, but they were stopped by Liu Feng.

"Be careful, don't hurt you when you burst." Liu Fengti reminded everyone.