Zhu Ying frowned slightly.

The old man arranged for him to meet Lan Yu. What does this mean?

After a moment's hesitation, Zhu Ying replied, "Well, I have never seen the elegance of the Duke of Liang."

Zhu Yuanzhang said with a smile: "Don't be scared by him."

Hearing this, Zhu Ying said confidently: "If the Duke of Liang leads 5,000 troops and I lead 5,000 troops, maybe I can avoid it."

"If I fight alone, hey, old man, the Duke of Liang might not be enough for me to defeat."

To others, this may sound like bragging.

But Zhu Yuanzhang knew clearly that his eldest grandson was really a ruthless person.

Coupled with the work-for-relief work a few days ago, he can really be considered a man of both civil and military talents.

Thinking of this, Zhu Yuanzhang felt very relieved.

"Okay, we know that your eldest grandson is extremely brave and can defeat ten thousand enemies. But marching and fighting is not the work of one person. It requires the deployment of troops. I wonder what your eldest grandson thinks about fighting." Zhu Yuanzhang asked.

Upon hearing this, Zhu Ying knew that the old man was testing his military abilities.

After a little thought, he did not directly answer the old man's question, but turned around and said:

"Yesterday, I went to see the Gunpowder Department with the eldest prince of the Yan Palace."

When Zhu Yuanzhang heard this, he put down the glass in his hand and listened.

Zhu Ying continued, "Now, the Ming Dynasty is the strongest in firearms. The way we used to fight wars has been quietly changing. I think that in the future, the army should prioritize firearms when fighting."

"How to better use firearms in combat should be the focus that needs to be explored now."

Zhu Yuanzhang nodded slightly. His eldest grandson did not talk about the things in the military books, but talked about firearms instead. It was obvious that he shared the same opinion as himself.

Firearms are crucial to conquering the world. From the beginning to the end, Zhu Yuanzhang attached great importance to the research and development of firearms and their large-scale use in the army.

"Grandson, have you visited the Gunpowder Department? Do you have any ideas?" Zhu Yuanzhang asked casually, not taking it too seriously.

He also didn't think that his eldest grandson could come up with any unique insights. After all, the technology and production of gunpowder had always been strictly controlled by him and would never be allowed to be leaked.

Hearing this, a hint of hesitation flashed across Zhu Ying's face.

In fact, as far as the current production of firearms is concerned, due to industrial restrictions, there will not be much change in the short term.

The only thing that could improve and quickly increase the power of firearms is the granulation of gunpowder.

When he was looking at the powdered black powder in the Gunpowder Department, he had already discovered a very small amount of granulated gunpowder.

People nowadays don’t fully understand the granulation of gunpowder. At that time, there were still many craftsmen who crushed the granulated gunpowder into powder.

This is a problem of cognition and habit, and Zhu Ying is not surprised.

Naturally formed granulated gunpowder like this actually doesn't have any obvious effect when used, and it may even be more likely to cause a barrel explosion.

Zhu Ying's current hesitation is that he doesn't know whether he should tell the old man about the effect of gunpowder granulation.

Seeing his eldest grandson lost in thought, Zhu Yuanzhang nodded slightly and did not urge him.

He took a bite of the dish, drank the wine in the glass, and then filled the glass for his eldest grandson.

Nowadays, people don’t pay as much attention to wine as they do in later generations. They just drink it in one gulp.

When Zhu Ying saw the old man pouring wine for him, he remembered what the old man had said before, asking him to meet Lan Yu. After a little thought, he said:

"Old man, in fact, in the Western Regions, new reforms have already occurred in gunpowder."

Hearing this, Zhu Yuanzhang paused, frowned, and asked, "What reform?"

"Gunpowder granulation." Zhu Ying replied.

Zhu Yuanzhang himself was very knowledgeable about firearms, and was even very familiar with the gunpowder formula and the production of firearms.

Zhu Yuanzhang could easily understand this word and asked, "Will this make the power of gunpowder even stronger?"

"That's right." Zhu Ying said affirmatively.

"The current powder gunpowder is very susceptible to moisture and is inconvenient to transport. Even a little rain will stop the use of the gun system."

Zhu Yuanzhang nodded when he heard this. Currently, this is to ensure the normal use of gunpowder.

The fire commanders would carry saltpeter, sulfur, and charcoal powder separately, and then mix them into gunpowder just before going into battle.

This is a big flaw on the battlefield. Sudden encounters and bad weather will cause great trouble to the temporary configuration of gunpowder.

"The method that Da Sun mentioned, we will know when the time comes when we have someone try it out."

Zhu Yuanzhang said after listening to it. His tone was relatively calm and not too excited.

There are some things that you can never understand unless you experience them yourself, just by listening to what others say.

Zhu Ying was not surprised either, because he knew it was impossible to make the old man realize the huge changes brought about by the granulation of gunpowder with just a few words.

In fact, this technology had already been gradually discovered and used in the middle and late Ming Dynasty.

But for the current gunpowder technology, it is truly black technology.

Once the complete change occurs, it will bring a devastating blow to the enemy.

When you drink the wine, you don't feel much, but the aftertaste is much stronger.

Gradually, the old man felt a little tipsy.

Being with her eldest grandson, the sadness brought by Mu Ying's death was suddenly diluted.

"We have arranged a few teachers for you. We will bring them here tomorrow. You can learn from them then."

Zhu Yuanzhang drank another glass and said to Zhu Ying with a smile.

Zhu Yuanzhang's current preparation is to train his eldest grandson just as he would train his own son.

Wencheng and Wujiang gradually built a strong team for Dasun.

He knew very well what his eldest grandson would face in the future, and only a strong team could suppress all disobedience.

He had already sent an urgent edict to Lan Yu, who was on the expedition to Handong, ordering him to return to the capital immediately.

At the same time, he also ordered the Jinyiwei to stop collecting Lan Yu and a series of evidence of the crimes of the Huaixi generals.

In Zhu Yuanzhang's view, his eldest grandson was better than Zhu Yunwen.

The most important thing is that if Lan Yu recognizes this nephew, the Huaixi Military Generals Group will be the best knife in the hands of his eldest grandson.

Moreover, Zhu Yuanzhang knew very well that his eldest grandson had fought with him.

I will never be able to guard this home peacefully.

My eldest grandson is only eighteen years old now, and there are still so many years to come. Given his temper, let’s not talk about anything else.

Fighting Japan is certain.

What can he, as a grandfather, do?

Since persuasion is useless, I can only join in the fight.

Fight early.

It's better to fight. The eldest grandson can still gain merit. When he inherits the throne, no one will dare to say anything.

"Although the wine is good, you can't drink too much, old man. Finish this glass and take a rest." Zhu Ying poured half a glass for the old man and said.

"Fill it up, fill it up! It's just a small wine glass, and you look down on us." Zhu Yuanzhang looked at the half-full glass of wine and said angrily.

Zhu Ying had no choice but to fill it up.

The current custom in the Ming Dynasty is to see off guests with a full cup of tea and to honor people with a full cup of wine.

The old man had no other choice but to use this as an excuse.

Zhu Yuanzhang chuckled, picked up the glass and drank it all in one gulp, then laughed and said, "That's refreshing."

Wine can lower blood pressure and protect the heart.

Drinking a moderate amount is obviously better for the old man's health and can also help promote sleep.

Not long after, the aftereffect of the wine took effect and the old man felt a little sleepy.

"Today, grandson, please sleep with us."

Zhu Yuanzhang, supported by Zhu Ying, walked into the room with a hint of pleading in his tone.

Zhu Ying heard this and nodded without hesitation, saying, "Okay, I'll sleep with you today. I'm worried about you sleeping alone after drinking."

Hearing this, Zhu Yuanzhang laughed happily.

When they got to the room, Zhu Yuanzhang sat on the bed, and Zhu Ying helped the old man change his clothes and take off his shoes.

When Zhu Yuanzhang took off his coat, he was wearing extremely luxurious silk underwear.

Zhu Ying saw it, but didn't show any surprise.

After helping the old man, Zhu Ying also took off his coat and slept next to the old man.

Looking at his eldest grandson's profile so close, Zhu Yuanzhang closed his eyes and soon fell asleep as the wine took effect.