"Lao Cheng, don't be stunned, hurry up!" Shen Bin pulled the reluctant Cheng Ruoyu down with the materials to make the rocket, and wanted Cheng Ruoyu to make a large lethal weapon that combined crossbow arrows and explosives.

Cheng Ruoyu walked to the front of the case with a look of grievance, although making cannons is their family's old business, but he really doesn't dare to change the direction of history, what if he can't go back to the right track of history, and he has also had a baby since he was a child, although he doesn't know what the girl looks like, but it can be regarded as a big local family! I haven't seen my future daughter-in-law yet, what if I stay in the Tang Dynasty?

"Don't ink, I know what you're worried about, don't worry, I won't let history change, just do it!" Shen Bin knew that Cheng Ruoyu's careful thinking was just worried about the recurrence of the chaotic incident of the last time, he had already thought of countermeasures, and the top priority now was to make the rocket he wanted.

"Really?" Cheng Ruoyu has always been skeptical, after all, this is not a joke, not all major events in history have been recorded, not to mention such a big thing as creating a cannon fire, maybe his name will go down in history if he is not careful, although it is not him Cheng Ruoyu who will go down in history, but Li Shixuan, but it must be a thing that adds a lot of color to history, how can anyone let it go?

"Really." Shen Bin was full of confidence, and even helped Cheng Ruoyu to start, Cheng Ruoyu looked at Shen Bin in disbelief, although he still didn't believe it, but he still couldn't help but develop it with Shen Bin.

After two days of continuous improvement and development, Shen Bin and Cheng Ruoyu's research finally came to fruition, Shen Bin and Cheng Ruoyu not only made of gunpowder made of artillery perfectly embedded in the arrow of the crossbow arrow, but also increased the power of the arrow explosion of the crossbow arrow, and at the same time the explosive power of the bow and crossbow was improved across the board, the range was longer, the lethality was greater, and the target was more accurate. For those of them who have just arrived in the Tang Dynasty, it couldn't be easier.

This kind of crossbow arrow developed by Shen Bin and Cheng Ruoyu can accurately shoot at the target at a long distance, and when the arrow enters the human body, it can instantly cause an explosion. It's hard to survive.

Several straw figures in the courtyard stood tall, Shen Bin and Cheng Ruoyu each had a bow and crossbow, the dark crossbow body exuded a solemn atmosphere, like the scythe of death, the two stood side by side, their eyes were resolute, looking at the few straw men in front of them.

"If you are foolish, take a few more steps back and try!" The distance between the two of them was about two hundred meters away from the straw man, but Shen Bin felt that this was only one-fifth of the distance that the crossbow in their hands could shoot, or even more.

Cheng Ruoyu still maintained his original posture, raised his eyebrows, and the corners of his mouth curled slightly, "Boss, I understand what you mean, but our yard is not that big, and if I retreat, I will go to the house to remove the tiles." ”

Shen Bin looked back at the house behind him, thoughtfully, "Forget it, the occasion we chose is not suitable, let's practice like this first." ”

As soon as Shen Bin's words fell, the two of them quickly put on the arrows, turned around, and shot, all in one go, with the sound of Peng inside the straw man, the dry straw man instantly caught fire, and turned into ashes after a while.

Shen Bin and Cheng Ruoyu turned to smile at each other, and clapped their hands with their right hands, "yes, it's successful!" Almost unanimous screams.

"Boss, this thing is so good, should we give it a new name? It can be mass-produced, and fighting a war like this is not the same as pinching an ant to death. Cheng Ruoyu was very satisfied with his research and development results, but he didn't expect that he still had talent in this area.

Shen Bin pondered for a while, this thing is easy to use, but mass production doesn't seem to be very practical, after all, the cost is too high, and he and Cheng Ruoyu can't do these things personally, it's too late now, and it seems impractical to rely on crossbow arrows alone, after all, bows and crossbows can only be used at a distance, and knives and guns are still inseparable from close range.

"Lao Cheng, how many people do you think you can do alone? Or can we train and promote? Or can you provide large quantities of material? ”

In a word, Cheng Ruoyu's head shook like a rattle, what kind of joke, he can't do it alone, training, everyone can do it, isn't history going to be rewritten again, besides, where to get so much money to buy materials, looking for Li Shimin, obviously no, "Boss, you really look up to me too much." ”

Shen Bin smiled slightly, and returned to the house with the crossbow arrow, "Don't worry so much, I've already got the name ready, it's called Fury Tianlei, as for the number of production, we only make four, and the four of us use it for self-defense, come on, don't be stunned!" ”

"Furious thunder? Good name, but what does it have to do with Ray? Cheng Ruoyu was a little puzzled.

Shen Bin did not answer Cheng Ruoyu's question, but concentrated on making the crossbow arrows of the four of them, and Cheng Ruoyu gradually forgot his question.

Three days later, the army advanced into the white road, set up camp, and at night a cavalry team quietly left the Tang army camp and went straight to the Jieli camp, under the cover of night, like a ghost, marching rapidly. Jieli, who was asleep, didn't know that the danger was approaching, otherwise he wouldn't be drunk and dreaming of death in the gentle countryside at this time.

In the night sky, the moonlight was like water, but it did not illuminate the vast land, and the cavalry stopped marching at the appropriate place, and one by one the kites rose in the wind and floated in the air, which was difficult to find unless it was carefully examined.

"Boss, does this work?" A voice asked Shen Bin quietly, it was Cheng Ruoyu who could be vaguely seen under the moonlight, staring at the cold wind, constantly rubbing his hands, and from time to time releasing some more strings of the kite, and the kite kept moving towards the distance under the traction of the line.

When the distance was about the same, Shen Bin ordered someone to fix the distance of the kite, which was just above the Jieli camp, and then Shen Bin and the four of them looked at each other, and they had a clear mind, and they ordered to shoot together, shooting dozens of bags carried under the kite, and suddenly it rained gunfire in the Jieli camp.

The flames of Feifei Yang Yang were sprinkled all over the Jieli camp, and the Turkic soldiers were still curious about what was spilled everywhere, and some people raised their heads to look at the sky, but saw black bird-like kites flying in the air. Then Shen Bin ordered the rope to be cut off, and one by one the kites flew straight to the Jieli camp, and the soldiers in the camp were still in a state of blindfolding.

Next, it was the real show, Shen Bin and the other four people replaced the crossbow arrows in their hands with the special rockets they studied, the crossbow fire and thunder, as the arrows in their hands flew out, the winter thunder sounded in the distance in the sky, a muffled thunder resounded through the sky, the thunder flashed, and even the Turkic soldiers were startled, how could there be thunder for no reason.

When the four crossbow arrows fell in different positions of the Turkic camp, suddenly the fire in the camp was everywhere, and there was chaos in the army, whether it was the dome or the soldiers, it suddenly caused a fire, and the camp was in chaos, the horses neighed and the beasts roared, and the fire sources were running around, so it was not lively.

But Shen Bin did not order a raid on the Turkic camp, but ordered a retreat, even Qin Yu was a little curious, are they here to play with fire?