Lan Yu said that he went to war this time, but in fact he was more like a guard. The main reason was that Sichuan was not peaceful. Recently, someone rebelled. The court also wanted to build several cities and roads in Sichuan to strengthen the court's control over Sichuan. Therefore, Lan Yu was sent to suppress the rebellion and to take charge.

"There are many basins in Shuzhong, and the climate is extremely humid. When gunpowder comes there, it is most afraid of turbidity. However, now it is different if you have a paper wrap. The outer layer of paper is coated with sheep oil, which can prevent moisture and save a lot of trouble!" Li Jie explained to Lan Yu with a smile.

The layer of paper outside the paper wrap is not ordinary paper, but requires special treatment, because when loading, the layer of paper will be wrapped in the projectile and stuffed into the gun, which can increase the airtightness of the gun and increase the range of the musket. In order to facilitate loading, the layer of paper must be coated with grease, and this layer of grease can be moisture-proof, which can be said to be a killer.

"Interestingly, such a small thing has solved many big problems. No wonder Your Highness refuses to let you go. He is indeed a talent!" Lan Yu also exclaimed with a paper bag of bullets. The moisture-proof of gunpowder is a big problem, because it is related to logistics. In the war, the army is actually fighting logistics. The pressure on logistics can reduce the front army to exert greater combat power.

Faced with Lan Yu's praise, Li Jie also said a few humility, but in his heart he secretly reminded himself: Stay away from Lan Yu in the future, this guy is arrogant and domineering, and Zhu Biao's generous character will not care about him. But when Zhu Biao dies, even if Zhu Yuanzhang doesn't deal with him, the emperor who succeeds to the throne will not tolerate him. This should be what the so-called character determines destiny.

Lan Yu is very interested in flintlock rifles and paper-pack bullets, but flintlock rifles cannot be supplied to the army for the time being. After all, it is only a trial production now and some improvements may be needed. Even if it is mass-produced soon, it will have to wait until next year to be equipped in the army in small batches.

However, it is easy to use paper bags. In fact, during this period, the Military Intelligence Bureau has started mass-producing paper bags. The inside is filled with new granular gunpowder. In fact, the granular gunpowder can also prevent moisture to a certain extent, but it is necessary to polish the holes on the surface of the granular gunpowder. The Military Intelligence Bureau does not have this technology yet. Fortunately, the paper bags can also isolate water vapor, and these paper bags will be given priority for supplying to the Bianjun.

Lan Yu is about to leave the capital the day after tomorrow, so he also said goodbye to Zhu Biao today. Unexpectedly, he had another unexpected gain when he met Li Jie, which made him very happy. Finally, after chatting with Zhu Biao for a few words, he was about to say goodbye and leave. After all, there are still a lot of things in the army that he needs to deal with.

But at this moment, Zhu Biao thought of something, so he called Lan Yu and said, "Uncle, you destroyed the remnants of the Mongolian Yuan last year, but after the battle, you still need to be managed. The court is preparing to place some of the Mongolian people on the border and set up Yingchang Wei and Quanning Wei. You are most familiar with the matter on the grassland. I wonder what you think about this?"

Lan Yu slapped when he heard Zhu Biao's words: "Your Highness, you are not for me. I am good at fighting, but I can't do it when it comes to managing the place. But if I ask me to just bury those men alive, keeping them will also be a disaster. Maybe I will rebel again."

Hearing Lan Yu say this, Zhu Biao couldn't help but smile helplessly and said, "Although the Mongolian Yuan is hateful, it can't be killed. On the one hand, it will hurt Tianhe, and on the other hand, the Mongolian Yuan has a large population, and it will be killed incessantly. Moreover, if the Mongolian Yuan has no way out, it may resist more fiercely, so we still have to find a way to govern it now."

"I really don't understand such government affairs. Your Highness should discuss with the ministers!" Lan Yu spread his hands. He really couldn't help with this matter.

Seeing that Lan Yu could not give any comments, Zhu Biao did not force him, so he personally sent him away.

Li Jie also followed Zhu Biao because the other party did not let him leave, and the flintlock rifle had been offered. What he should do next must still require Zhu Biao's instructions, so he could only wait. However, when he heard about Ying Changwei and Quan Ningwei, his eyes lit up, and then he kept lowering his head and pondering without saying a word.

Zhu Biao took Li Jie back to Zuo Chunfang again, fiddling with the flintlock rifle in his hand. After a while, he looked at Li Jie and said, "Li Jie, you should be rewarded for making this great contribution and be promoted to Zuo Qing Jilang!"

"Thank you Your Highness!" Li Jie also hurriedly saluted. In order to follow the eighth rank, Zuo Qing Jilang promoted his official position to two levels, which was higher than the rank of his father Li Zhu. Moreover, Qing Jilang was in charge of impeaching palace officials and rectifying duties, and was already considered an official with real power in the Zhanshi Mansion.

"No need to be polite. You are proficient in firearms. Although the flintlock rifle has been developed successfully, it still needs to be supervised and improved. You must also keep an eye on these. I will ask your father for me for you, and there will definitely be rewards at that time!" Zhu Biao said again with a happy look. He has now regarded Li Jie as a talent that can be cultivated. After all, he is the prince and needs many people to help him govern the world in the future.

"Thank you, Prince!" Li Jie thanked him again, but this time he hesitated for a moment, and then finally gritted his teeth and said, "Your Highness, I just heard about Wei Yingchangwei and Quan Ningwei, and I have some opinions on this!"

Although Zhu Biao did not avoid Li Jie when talking about this matter with Lan Yu, he suddenly expressed his opinions, which made Zhu Biao frown because Li Jie's behavior was a bit rash, and even more serious it could be said that he was arbitrarily discussing the government affairs.

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

Li Jie was excited and immediately spoke: "Mongyuan feared power but did not have virtue. Although the remnants were destroyed, the prestige of the Mongolian Yuan on the grassland was still there, so those grassland people did not truly surrender. If the court gathered them together and established Yingchang Guard and Quanning Guard, I dare to assert that within a month, these two guards would rebel!"

As soon as Li Jie said something, Zhu Biao's brow suddenly frowned. Li Jie's rash comments on government affairs had already made him feel a little unhappy. Now he was talking wildly, concluding that the newly established two guards in the court would rebel, which made Zhu Biao quite displeased. After all, the establishment of two guards was the result of discussion by many ministers in the court, and it was also approved by his father Zhu Yuanzhang. Is it that Li Jie is smarter than the ministers in the court, or even his own father?

"Well, I understand this, I will think about it, you go down!" Although Zhu Biao was not happy, he did not show it on his face, but waved his hand lightly. He originally wanted to train Li Jie well, but now it seems that Li Jie is still too young and needs to experience it well in the future.

Li Jie could also feel Zhu Biao's attitude towards him changed, but he didn't care at all, because the reason why he dared to say this was naturally because he had his own confidence.
Chapter completed!