Cheng Ruoyu reluctantly let go of Shen Bin, Shen Bin still covered his mouth and stood aside and forced the smile in his heart, "Brother Yu", hahaha, isn't it that Li Jin turned over Cheng Ruoyu as a fish seller, and now he is in a high position and still remembers it, thinking about Li Ji is also confused, but because of Cheng Ruoyu's identity, he does not dare to refute the question.

Cheng Ruoyu took Li Jin's letter, except for Brother Yu, who understood the envelope, but the content of the letter was half-understood, after all, there is still a gap between ancient and modern characters, Cheng Ruoyu stared at the letter in his hand with his eyes tightly at this time, looking at the elegant and bold font written by the brush, his eyebrows had already been twisted into eight characters, and his face was full of sadness.

"What's wrong?" Realizing Cheng Ruoyu's expression, Shen Bin thought that something was wrong in the artillery room, so he hurriedly put away his smile and asked Cheng Ruoyu with a solemn face.

Cheng Ruoyu's face was full of sadness, and then his face was full of despair, his hands drooped down, his neck shrank, and his head went up, "Boss, I can't understand the ancient text, Li Ji also gave me the words to chew the text, plus the simplification of ancient and modern characters, I can't understand it!" ”

Realizing that it was not the artillery room that had an accident, but that Shan Cheng Ruoyu couldn't understand the content of the letter, Shen Bin's tense heart finally relaxed. After all, his father is a professor of Tang History, and he has studied words, plus he has crossed several times, Shen Bin should still be able to understand it, not to mention that he is also a helper.

With the help of Shi Yang, Shen Bin understood the content of the letter, it was nothing more than that Li Jin didn't understand some things about Cheng Ruoyu before, and hoped that Cheng Ruoyu could rush back to guide him as soon as possible.

"Got it, Li Jin wants you to go back quickly and guide him to make artillery, he didn't understand what you said, let's go, it just so happens that I'm fine today, let's go and have a look with you."

Shen Bin handed the letter to Chen Ruoyu, Cheng Ruoyu got the letter and pouted, "It seems that we still have too little research on history, and we are still students in the history department." Cheng Ruoyu shook his head as if he understood.

"Don't hurry up yet." Shen Bin urged.

Shen Bin and Cheng Ruoyu stepped on the horse, without an entourage, the weather in the north was cold, Shen Bin made a cloth ring that could be made into a scarf and turban, put it on his body, and protected his face to reduce the biting cold wind when riding a horse to drill into the body, Cheng Ruoyu saw the back bar and wanted to speak, Shen Bin threw him one, Cheng Ruoyu caught it and gave a thumbs up.

"Boss, I didn't expect you to do needlework?"

"I didn't do it, I asked my subordinates to do it, I just told them the requirements for production, and I have already asked Qin Yu to arrange to do more, and the whole army has sent it down, after our improvement, it can not only prevent the wind, but also not affect our operations."

"Boss, you're really talented." Feeling the warmth coming from the erection neck, Chen Ruoyu also learned to pat his ass.

"I didn't invent it, it's just that in modern times I like to ride and know more about headscarves, let's go!"

In less than two quarters of an hour, Shen Bin and Cheng Ruoyu arrived at the wilderness where saltpeter and raw materials for making artillery were hidden before, Shen Bin observed the surrounding environment, it was indeed a good place, even if there was an explosion of artillery experiments here, then the explosion would not let people find out where the source of life was.

Here, Li Jin had just put the gunpowder materials together and made a sphere like a mine, placed it in an open place, lit the fuse, and hid in a safe place.

There was a boom, like a thunderstorm on the ground, and suddenly the loess flew up.

With the sound of the mine explosion, the horses under Shen Bin and Cheng Ruoyu's seats were immediately frightened and neighed, Shen Bin and Cheng Ruoyu tried their best to control the panicked horses, but the horses were too frightened, one sideways threw Shen Bin and Cheng Ruoyu off the horse, galloped away, and the two helplessly patted the dust on their bodies and were speechless.

Li Jin came out of safety after the explosion and saw Shen Bin and Cheng Ruoyu looking at the disappeared horses. But Li Jin, who had been hiding in a safe place, didn't know about it, and thought that the two of them came on foot.

"Do you say that Li Jin's invention has made a breakthrough? Let's go check it out! Realizing that it was impossible for the horses to chase back, Shen Bin suddenly thought of Li Jin's experiment, and immediately pulled Cheng Ruoyu to turn around, but he collided with Li Jin, who happened to come over. knocked Li Jin to the ground at once, with all fours facing the sky.

Cheng Ruoyu looked at Li Jin's appearance, like a turtle in the shell, and immediately laughed, but Shen Bin hurriedly stepped forward to help Li Jin up, "Are you okay?" ”

"Back to the adult, the villain is fine!" Li Zhen straightened the folded placket of his clothes, dusted off the dust, and clasped his fists in salute.

"I heard the explosion just now, is it the result of your research?"

"Lord Hui, the villain really doesn't know how to make the cannon you mentioned, but the villain found that all the materials were placed in a bamboo tube, and then several bundles were put together, and then a fuse was added, and the explosion effect was excellent, like a thunderbolt descending from the sky. It can hurt people invisibly. Li Jin explained his research results to Shen Bin one by one, in fact, even if Li Jin didn't talk about it, Shen Bin roughly understood.

"Boss, isn't this just a dynamite bag?" Hearing Li Jin's description, Cheng Ruoyu expressed his opinion.

"There's no medicine here, so it's not a dynamite bag! My lord, I gave him a name called Fire Thunder. "Li Jin doesn't understand modern explosives packs, and he doesn't understand what the exploded bamboo tube has to do with medicine.

Shen Bin's heart was half happy, and he was generally sad, they had advanced the invention of the explosive pack by thousands of years! But after thinking about it for a while, Shen Bin seemed to have a way to deal with it.

"Okay, according to what Li Ji said, it is called Fire Thunder, he is our secret weapon, and the Heavenly Thunder descends into the world. How much can you make? ”

"My lord, this is extremely dangerous, you can't do too much at a time, so as not to have an accident, I can make ten a day alone! However, there are still many areas that need to be improved, and I don't know much about them, so I would like to ask for my advice. ”

"Well, okay, we'll stay here today to discuss with you, and then rush back in the evening."

"Great!" Hearing Shen Bin say that he wanted to stay with Cheng Ruoyu to discuss with him, Li Jin couldn't help but be overjoyed, since he came into contact with the two people in front of him, he had heard too much information about artillery that he couldn't imagine, but the conditions were limited, and he didn't know how to do it.

Shen Bin and Cheng Ruoyu stayed in Li Jin's experimental room for a whole day, until it was getting late and the moon was scarce, and the two returned to the temporary governor's mansion from Li Jin, fortunately Li Jin had spare horses, otherwise the two didn't know how long they would have to walk.

In the bedroom, Shen Bin sat quietly, thinking about what he had discussed with Li Ji during the day about artillery fire.

"If you continue like this, there will be another mess."

The voice of the ghost Shi Yang came into Shen Bin's thoughts from far and near, and Shen Bin closed his eyes, a little puzzled. "What do you mean?"

"I'd better take you to my space study! You need to make up for your knowledge of history! ”

Before Shen Bin could react, after a period of dizziness, Shi Yang couldn't help but pull Shen Bin's soul into a space full of vast starry sky.