Lan Yu said that he was on the expedition this time, but in fact, it was more like a town guard, mainly because Sichuan was not very peaceful, and recently there was a rebellion, and the imperial court also wanted Sichuan to build several cities and roads to strengthen the imperial court's control over Sichuan, so he sent Lan Yu to go, one is to quell the rebellion, and the other is to sit in the town.

"There are many basins in Shuzhong, the climate is extremely humid, and the gunpowder is most afraid of dampness when it arrives there, but now it is different with paper wrapped bullets, and the paper outside this layer is coated with mutton fat, which can prevent moisture and save a lot of trouble!" Li Jie explained to Lan Yu with a smile.

The layer of paper on the outside of the paper-wrapped bullet is not ordinary paper, but requires special treatment, because when loading, this layer of paper will be wrapped with the projectile and stuffed into the gun, which can increase the air tightness of the gun and increase the range of the musket.

"Interesting, such a small thing has solved many big problems, no wonder His Highness refuses to let you go, it's really a talent!" Lan Yu held a paper-wrapped bullet and said in admiration, the moisture-proof of gunpowder is a big problem, because it is related to logistics, and the army is actually fighting logistics, and the pressure on logistics is less, so that the front army can exert greater combat power.

In the face of Lan Yu's praise, Li Jie also said a few words of modesty, but he secretly told himself in his heart: stay away from this Lan Yu in the future, this guy is arrogant and domineering, that is, Zhu Biao's generous temperament does not care about him, but when Zhu Biao dies, even if Zhu Yuanzhang does not clean him up, the emperor who succeeds him will not tolerate him, this should be the so-called character determines fate.

Lan Yu is very interested in flintlock pistols and paper-wrapped bullets, but flintlock pistols cannot be supplied to the army for the time being, after all, it is only trial production now, and some improvements may be needed, even if it is mass-produced immediately, it will not be able to equip the army in small batches until next year.

However, it is easy to wrap paper-wrapped bullets, in fact, during this time, the Ordnance Bureau has begun to mass-produce paper-wrapped bullets, which are filled with a new type of granular gunpowder, in fact, granular gunpowder can also be moisture-proof to a certain extent, but the fine holes on the surface of the granular gunpowder need to be polished off, the Ordnance Bureau does not have this technology for the time being, fortunately, the paper packet can also isolate water vapor, and these paper-wrapped bullets will be given priority to the supply of border troops.

Lan Yu was going to leave the capital the day after tomorrow, so he also said goodbye to Zhu Biao today, but he didn't expect to meet Li Jie and have an unexpected gain, which made him very happy, and finally chatted with Zhu Biao for a few words, and then he was ready to leave, after all, there were still a lot of things in the army that he needed to deal with.

But at this moment, Zhu Biao thought of something, so he stopped Lan Yu and said: "Uncle, last year you destroyed the remnants of the Mengyuan army, but you still need to govern it, the imperial court is ready to place a part of the Mongolian people on the border, set up Ying Changwei and Quanning Wei, you are most familiar with the things on the grassland, I don't know what you think about this?" ”

When Lan Yu heard Zhu Biao's words, he slapped his head and said: "Your Highness, it's hard for me, I'm good at fighting, but when it comes to governing places, I can't do it, but if you want me to say, just bury those Mongolian people alive, and it's also a scourge to keep them, maybe when it will be the other way around." ”

Hearing Lan Yu say this, Zhu Biao couldn't help but smile helplessly: "Although Meng Yuan is hateful, he can't kill them all, first, it hurts the heavens, and second, Meng Yuan has a lot of people, and he can't kill them at all, and if Meng Yuan has no way out, he may resist more fiercely, so now we still have to find a way to govern it." ”

"I really don't understand this kind of government affairs, Your Highness should discuss it with the ministers!" Lan Yu spread his hands and said, he really couldn't help with this matter.

Seeing that Lan Yu couldn't give any opinions, Zhu Biao didn't force it, so he personally sent him away.

Li Jie has also been following Zhu Biao, because the other party did not let him leave, and the flintlock pistol has already been offered, what should he do next, he must still need Zhu Biao's orders, so he can only wait, but when he heard about Ying Changwei and Quan Ningwei, his eyes lit up, and then he kept bowing his head and pondering.

Zhu Biao took Li Jie back to Zuo Chunfang again, and he was also fiddling with the flintlock pistol in his hand, and after a while, he looked at Li Jie and said: "Li Jie, you have made this great achievement, you deserve to be rewarded, and you will be promoted to Zuo Qing Jilang!" ”

"Your Highness!" Li Jie also hurriedly saluted, Zuo Qing Jilang suddenly promoted his official position by two levels in order to be from the eighth grade, which is higher than the grade of his father Li Zhu, and Qing Jilang is in charge of impeaching palace officials and correcting the ministry, and he is already an official with real power in the Zhan Mansion.

"Don't be polite, you are proficient in firearms, although the flintlock pistol has been successfully developed, it still needs to be supervised and improved, you also have to keep an eye on these, I will go to my father to ask for credit for you, and there will definitely be a reward at that time!" Zhu Biao said again with a pleasant face, he now regards Li Jie as a talent that can be cultivated, after all, he is the crown prince, and he will need many people to help him govern the world in the future.

"His Royal Highness Prince Xie!" Li Jie thanked him again, but this time he hesitated, and then finally gritted his teeth and said, "Your Highness, the minister just heard about Wei Yingchangwei and Quan Ningwei, and he has some opinions on this!" ”

Although Zhu Biao and Lan Yu did not avoid Li Jie when they talked about this matter, he suddenly expressed his opinion now, which made Zhu Biao frown, because Li Jie's approach was a bit reckless, and it was even more serious that he was arguing about the government in vain.

However, Zhu Biao is a generous person after all, so although he was a little unhappy in his heart, he still asked, "What do you think?" ”

Li Jie's spirit perked up, and he immediately spoke: "Meng Yuan is afraid of power but not virtue, although the remnants have been destroyed, but Meng Yuan's prestige on the grassland is still there, so those grassland people are not really subservient, if the imperial court gathers them together and sets up Ying Changwei and Quanning Wei, the minister dares to assert that within a month, these two guards will rebel!" ”

As soon as Li Jie's words came out, Zhu Biao's brows wrinkled suddenly, Li Jie's reckless opinion on government affairs had made him a little unhappy, and now he was talking wildly, concluding that the newly established two guards of the imperial court would rebel, which made Zhu Biao also quite unhappy, after all, the establishment of the two guards was the result of the consultation of many ministers of the imperial court, and it was also agreed by his father Zhu Yuanzhang, is it that you Li Jie is smarter than the ministers of the court, and even your own father?

"Well, I know about this, I'll think about it, you go down!" Although Zhu Biao didn't like it in his heart, he didn't show it on his face, but waved his hand lightly, originally he wanted to cultivate Li Jie well, but now it seems that Li Jie is still too young, and he still needs to have a good experience in the future.

Li Jie could also feel the change in Zhu Biao's attitude towards him, but he didn't care about it, because the reason why he dared to say so was naturally because he had his own confidence.