"The recipe for black powder." Chen Fei exchanged for [Internet Search Coupon] and [Memory Potion], and began to search for the recipe of black powder on the search interface of the [Treasure Chest System].

Gunpowder, the most important invention of mankind in the era of hot weapons, Chen Fei hesitated for a long time, and finally chose to let this "criminal" come out in advance.

"Sooner or later, this thing will be invented, just a few hundred years earlier." Chen Fei comforted himself, and then checked the black powder formula.

The recipe was actually quite simple, just memorized at a glance, and he used the extra time to look at the design principles of the artillery.

The design of the artillery is actually not difficult, of course, the premise is that it is the oldest kind of primitive artillery, as well as the more advanced Franc machine gun in the back, and then the cannon production process is a bit troublesome, Chen Fei didn't have time to take a closer look, just wrote down these two kinds of guns, thinking about it, it can be regarded as an invention beyond the times, in the war... Well, it is estimated that it will be invincible.

In addition to these two kinds of cannons, Chen Fei also found a very practical and interesting thing, at least for the time being, the possibility of entering this war is much greater than building a batch of Furlong cannons.

Chen Feiler stopped his horse, found the craftsman in the army, asked for a piece of wood and pen and paper, found a quiet place to draw the design principle of the Franc cannon, in addition, he also wrote down the formula of gunpowder and... Another fun stuff recipe.

Then he packed his things, stuffed the design of the Furlong cannon into his arms, and got on the horse with another recipe to find the wild Cheng Biting Jin.

The wild Cheng Biting Jin was not in a good mood, it seemed that he was defeated in the first battle of Songzhou, and he was running dirty words at the moment. With Chen Fei's knowledge more than a thousand years later, there are still many swear words that he has not heard, which is enough to show that Cheng Bites Jin... Is it a mouth cannon?

Chen Fei decided to wait until Cheng Yanjin was in a better mood before coming forward to talk to him about gunpowder, so he slowed down the pace of the horse and planned to quietly...

"Bah, boy! How did you retreat when you saw the old man? Don't hurry up and get the old man up! ”

"Hey! Careless! Careless! Chen Fei hung his head and urged the horse to step forward.

Cheng Yanjin saw that Chen Fei was in a much better mood, and said in a relaxed tone: "Boy, your proposal is good, how long do these thousand elite soldiers need to stay at this time?" It's time to come in handy, and I've ordered someone to deliver the news to the generals of that unit so that they can set fire to the backyard of Tibet. ”

"It's... It seems to be with Your Majesty..."

Cheng Biting Jin patted Chen Fei's shoulder and said with relief: "Don't worry, Your Majesty's old man will send someone to say, presumably Your Majesty will definitely agree." ”

Chen Fei rolled his eyes and bought a pass with Cheng Yanjin. "Uncle Cheng, I have a plan, maybe I can relieve the siege of Songzhou, I don't know if Uncle Cheng can trust me."

"Huh?" Cheng Yanjin glanced at Chen Fei unexpectedly, and saw that he didn't look like a joke, so he immediately grabbed Chen Fei's clothes excitedly and sprayed him with saliva: "Boy, what can you do, come quickly!" ”

Chen Fei smiled a little reluctantly, pointed at Cheng Biting Jin's big hand and said, "Cheng... Uncle Cheng, can you let me go first? ”

Cheng Yanjin let go of Chen Fei, clapped his hands and said, "Boy, if you have something to say, talk about it quickly, let it go, don't grind and chirp like a girl." ”

Chen Fei... Well, he didn't plan to deal with Cheng Yanjin, a reckless man, so he sorted out his armor and asked, "Uncle Cheng, dare to ask if there is a stone-throwing truck in the army?" ”

"Stone-throwing trucks?" Cheng Yanjin shook his head: "This war is to defend Songzhou City, not to siege the city, what are you doing with things?" ”

Chen Fei...... Plan ahead! Do you know how to plan ahead? What if the Tibetans captured Songzhou?

"Well, if you don't have a rock-throwing truck, you won't have it." Chen Fei is also helpless, without a rock-throwing car, it is impossible for him to change into one, right? The [Treasure Chest System] doesn't seem to have this function for the time being.

Chen Fei tore off half of the paper and handed the recipe with black powder written on it to Cheng Yanjin, as for the other half, he didn't plan to take it out for the time being, anyway, he couldn't use it now, and it was not too late to take it when he needed it.

"Uncle Cheng, can you send a sergeant to search for these items, maybe it will have a miraculous effect on the battlefield."

Cheng Yanjin took the paper and looked at it twice, his face was puzzled, and he said, "What is this?" Saltpeter? Brimstone? Are you going to learn Taoist alchemy? ”

"It's not alchemy, these things can be combined to become a killing weapon, after collecting these things, Uncle Cheng can see it."

"These things... Can you kill? Cheng Yanjin became more and more puzzled, and his eyes looking at Chen Fei were full of suspicion.

Chen Fei had no doubt that if Cheng Yanjin verified that these things were useless, he would definitely make Chen Fei useless!

"Really, Uncle Cheng can collect some first." Chen Fei pointed to the sky and swore with a sincere and serious attitude.

"Good! Believe in you! Cheng Yanjin took the paper, handed him to the deputy general beside him, and ordered: "Follow this to find something." ”

The adjutant general took the paper and responded with a fist: "Yes!" "As he spoke, he was going to lead a few sergeants away...

"Wait!" Chen Fei stopped the lieutenant general who was about to leave.

Cheng Yanjin glared at Chen Fei: "What's wrong?" Boy, what are you doing? It was you who said you were going to look for something, why did you stop it now? ”

Chen Fei's face was a little embarrassed, and he pointed to the deputy general and said, "Uncle Cheng, I will add a little more things, there are a few things I forgot to write." ”

"Humph!" Cheng Yanjin snorted angrily and did not speak, and the adjutant general returned the paper to Chen Fei, and he added a few more irrelevant materials crookedly on the horse, and then returned it to the adjutant general.

The adjutant general accepted the paper and left the group with a few sergeants.

"Boy, I'm afraid those things added at the end are useless, right?" Cheng Yanjin looked at the direction of the lieutenant's departure, touched his chin and said.

Chen Fei looked back in surprise, waiting for him was a big pot sticker!

"Smack!"

"Stinky boy, it's better to talk to your Uncle Cheng, you're still tender for a few years!" After a pause, Cheng Yanjin said again: "But seeing that you kid is so cautious, maybe this is really a good thing, and the old man is getting more and more curious." ”

Chen Fei smiled slightly and looked into the distance: "Hehe, Uncle Cheng, don't worry, things will definitely not let you down." ”

...........

The march was not as interesting as imagined, after riding the horse for most of the day, his ass was numb, and thinking that there were still ten days to go in the future, Chen Fei wanted to commit suicide in despair.

When he got the military order to set up camp, Chen Fei almost jumped off his horse without excitement! However, before he could be happy for too long, he felt his body light, and then the sky swirled, and by the time Chen Fei reacted, he had already returned to his horse.

"What's the situation? What's the situation? How can I fly? Chen Fei felt that he had encountered a supernatural event and was shocked.

"Smack!" Chen Fei received a slap on the back of the head, and when he looked back, Cheng Yanjin sprayed saliva at him.

"Fly a fart! It was the old man who put you on the horse, come, follow the old man to learn how to set up camp! ”

Chen Fei...... Can you still have a good rest?

Sorry sorry, I went to the party today, it's a little late, and there will be a chapter to make up later

(End of chapter)