With the departure of the people visiting the six countries. This army of the Qin State also had to call back to Xianyang, and then take a rest. Transferred to the battlefield.

The march of the army is not something that can be completed in a day. In particular, the formation of the divisional staff. Let them start planning, marching routes. King Qin's guards also began to move towards Xianyang. Shang Wen returned to Xianyang with him.

Just when the army was about to be marched out. One person came very unexpectedly. Zhang Liang actually came to Shang Wen in person. This surprised Shang Wen a little.

"I wonder what's the matter with Mr. Zhang?" Shangwen asked.

"Oh. Dare to ask Lord Qin. This army is about to be marched out? Zhang Liang asked.

"Yes." Shang Wen replied simply.

"Oh. Na Liang has something to say. Zhang Liang said.

"Straight, it's okay." Shang Wen still said very now.

"Liang is here this time. It is the submission of diplomatic documents. I also asked Mr. Qin to forward it to the King of Qin. Zhang Liang said and took out a bundle of bamboo slips.

"Yes. Good. I'll leave it to King Qin. Shang Wen said with a bamboo slip.

"Naliang has taken his leave." Zhang Liang was about to turn around and leave as he spoke.

"Wait." Shang Wen exclaimed. Shang Wen felt that it was too inconvenient to see such a bulky bamboo slip. It is no wonder that the ancients could describe a thing in a few words. It's all because of the writing instrument.

"Mr. Zhang, wait a moment." Shang Wen said as he ran into his tent. Took two notebooks and pencils out.

"I see that Mr. Zhang's writing instrument is so inconvenient. It's a little bit of a heart in the next bit. Shang Wen said.

Saying that, Shang Wen handed it over to Zhang Liang in person.

"This." Zhang Liang hesitated.

"It doesn't matter. Mr. Zhang is a literati. Literati inevitably have to write, write, and draw. These things can just make up for the inconvenience of writing. Shang Wen said.

"What is this?" Zhang Liang asked again.

"Notebook and pencil. It's made of paper. Pencils are easy to write with graphite. Shang Wen said.

"That. Liang wrote about Mr. Qin here. Zhang Liang is not polite.

"Liang will take his leave. Leave. Zhang Liang arched his hand and said.

Shang Wen sent Zhang Liang away. Just about to pack up. was snatched by Yingyu from the bamboo slip in his hand.

"Oops. It's flying so soon. The one named Zhang Liang didn't deliver letters. Yingyu opened the paperwork dissatisfiedly and saw it.

"Nothing like that." Shang Wen vetoed it without hesitation.

"What? The ROK wants to set up an embassy in Daqin, China. This vixen is also coming. Yingyu shouted dissatisfiedly.

"It's diplomacy. Nothing big deal, right? Shang Wen asked.

"What diplomacy. I see, I see what princess in Korea is ill-intentioned. Seeing that my Great Qin State is strong, they Korea is weak. I just want to make a room. Shameless. It's so shameless. This thing is not allowed. Absolutely not allowed. Yingyu shouted. As he spoke, Yingyu drew his sword casually. and chop up the paper that is still on the ground.

"Hey, stop. This is a diplomatic instrument. Shang Wen shouted to stop.

"I don't care if he doesn't do anything. Anyway, there is not a single good thing in Korea. It's full of power schemes. I'm for your good. Yingyu said indignantly.

"Alas. Shang Wen looked at the chopped paperwork on the ground. It's too late to remedy it now. Yingyu arrogantly withdrew her sword.

"Let's go. I've got everything packed. This place. I don't want to stay for a moment. Yingyu said and took Shang Wen's hand to the carriage. Shang Wen didn't want to go. was dragged into the car by Yingyu.

The carriage soon joined the convoy and was developed in Xianyang, North Korea.

The two people in the car didn't say a word. Yingyu was the first to ask. After all, she felt that the atmosphere was a little dreary. "Why don't you speak." Yingyu asked.

"Say what?" Shang Wen replied.

"What's the matter?" Yingyu said.

"I don't know what to write about it?" Shang Wen said.

"Dead nerd, stupid, deaf nerd. Dumb nerd. Yingyu scolded a series of nerds.

Shang Wen ignored Yingyu, took out his notebook, took out a pencil, and began to sketch something. Shang Wen thought of excusing Yingyu. If King Qin can't see the real thing, he will probably be unhappy. Come to think of it. Shangwen felt the need to design a musket.

Thanks to the presence of thundermercury. It is passivated and grease or paraffin is used. Passivation treatment is to treat it to increase its sensitivity. It is also to improve security. But if it is completely blunted, then there is no point in changing the flint to a firing musket. Therefore, there are still standards for passivation. This criterion is the effect of using a certain amount of free fall motion of a heavy object at a distance of five inches, or a little higher, to shoot it. This standard force is the force generated by the firing device to fire the fire cap and then ignite the propellant. Push the bullet. This strength was tested through such experiments. That's it. Then unify production. The production formula of mine mercury and the production method of nitric acid sulfate will directly block the spread of this technology.

Now that the Qin State was able to produce flintlock muskets on a large scale, these muskets had to be put to good use. For example, remove the flint and other objects in it and replace it with a starting hammer. Improvements to ignition methods, etc. So. The reliability of the musket will be greatly improved.

Shang Wen began to draw some sketch improvements. Wait until that's done. Shangwen believes that for some grenades, mines and other weapons, it is also possible to shoot through the appearance of mine mercury.

But this way. The demand for mine mercury is very high. In this way, the production of sulfuric acid and nitric acid must be increased.

"Hey. Ay. Yingyu saw Shang Wen take out her notebook and didn't care about anything. I feel bored.

"I'll call you that, nerd." Shang Wen had already heard it. Deliberately did not agree.

"Tell you to ignore me." Saying that Yingyu is a kick.

"Oops. You're too ruthless. Shang Wen shouted loudly.

"Who told you to ignore me." Yingyu said.

"Didn't I design a musket for you?" Shang Wen said as he threw the notebook to Yingyu.

"What is this? I don't understand. It's a mess of paintings". Yingyu said.

"Hehe, if you don't understand it, it's right. This is a firing musket. With this, guns in the future will be called firearms. Shang Wen said.

"Use a fire cap, or make a primer, and then make a bullet. As long as the firing pin is fired, it can be shot. Shang Wen said.

"Really?" Yingyu asked.

"I have nothing to do with you. But you have to build a chemical plant and produce these things on a large scale before you can use them. Shang Wen said.

"Chemical plant. This one is on me. Yingyu didn't ask the reason for the matter, and directly recruited the chemical plant on her head.

"Forget it. You're the only one who has the money to spare. Shang Wen said.

"That is, I made a lot of money from my father's harem. That's right. Do you have any gizmos that you don't. I'm going to build a chemical plant, and I'm going to have to raise some of the money. Yingyu said as a matter of course.