The glass bottle was specially commissioned by Zhu Yunwen; it was narrow at the top and wide at the bottom. He then placed the flame he had created inside the bottle.

I didn't put in too much the first time; I just wanted to test its power.

Zhu Yunwen pushed the table over to the ground and stood aside.

A protective barrier was formed, and then a lead wire was pulled over.

To test the power of the glass bottle, Zhu Yunwen even placed a copper basin on top of it.

He then instructed the eunuchs around him to keep out all people within a hundred meters of his study.

After everything was in place, the fuse was lit using the tinderbox.

A loud bang was heard, and a plume of smoke rose from the study.

Zhu Yunwen glanced at the bronze basin first, and found that there was a hole in it, and the bronze around it had cracked open.

This power filled Zhu Yunwen with surprise and delight.

He decided to add more explosives to test their power.

He poured all the powder into the glass bottle and lit the fuse again.

"Boom! Boom! Boom!"

After three loud bangs, the study in the East Palace almost collapsed, and even a large part of the roof was broken.

Zhu Yunwen hid behind the table, where countless shards of glass were embedded. If he hadn't dodged properly, he would probably be a hedgehog by now!

This truly proves the saying, "If you don't court death, you won't die." Looking at the hole in the roof, Zhu Yunwen didn't know whether to laugh or cry.

Zhao Qingzhu rushed in first and, seeing the mess, worriedly checked whether Zhu Yuntong was injured.

But when he saw the other person's face, he couldn't help but burst into laughter.

"What are you laughing at? I almost died, and you're still in the mood to be happy?"

"Your Highness, your face...your face is just too funny!"

Zhu Yunwen walked to the bronze mirror and examined it carefully. He found that his face looked like a little tabby cat with patches of white.

Seeing this, I couldn't help but laugh.

At this moment, Zhang Shan also arrived at the East Palace, staring blankly at the almost collapsed study, not knowing what to say.

When he saw the Crown Prince's appearance clearly, he wanted to laugh but dared not, and his face turned red from holding it in!

"Find someone to make the things in this picture. I only need glass bottles like these."

"Your Highness, what use do you have for this glass bottle?"

"Look at my study? That's the power of this glass bottle. Once we make this, we can rule the world!"

Zhang Shan is increasingly impressed with the Grandson; it seems there's nothing in this world he can't do.

"Your Highness, are you saying this thing can cause such great power?"

"That's right, you can use a glass bottle to inflict secondary damage on the enemy. Look at the shards on the table!"

Zhang Shan never expected that Zhu Yunwen would suddenly become different.

First they made a small but powerful musket, and now they've made this thing!

The news quickly reached Zhu Yuanzhang's ears, and he recalled the martial arts competition that day.

It seems that what others said was not without reason; my grandson is indeed a capable person!

"Go and summon the Crown Prince; I have some questions for him!"

The eunuch behind him quickly knelt down and said yes, and ran all the way to the East Palace.

At this moment, Zhu Yunwen was working hard to fill in the roof of his study.

The Imperial Study.

Zhu Yuanzhang simply looked at the memorial without saying a word, while Zhu Yunwen moved his legs, which had gone numb from standing.

Do you know your crime?

"Grandson knows he is wrong, but he doesn't know where he went wrong!"

One sentence almost made Zhu Yuanzhang laugh. He had never seen someone rush to admit their mistake without even knowing what they had done wrong.

"Then why did you admit your mistake?"

"No matter what, since Grandfather asked that question, it means I was wrong. No matter where I went wrong, it's all my fault!"

"You little rascal, all you do is try to make me happy!"

Zhu Yuanzhang put down the memorial in his hand and picked up a pastry.

"What did you do at the East Palace today?"

In fact, Zhu Yunwen already knew roughly what it was about before he arrived.

So he took out the musket from his pocket.

"Grandpa Emperor, look at this thing of mine!"

As he spoke, he fired a shot at the door of the imperial study.

Zhu Yuanzhang stared at the wooden door in front of him, his mouth agape in astonishment.

I never expected that my grandson would create such an exquisite yet powerful musket!

"Was it this that helped you beat Dongdao that day?"

"Yes, that's what it's all about!"

"You little rascal, you made us worry about you all night, but I didn't expect you to be prepared!"

"Grandpa, the thing I'm making now is even more powerful than this; it can kill any living thing within a hundred meters!"

Zhu Yuanzhang stared in disbelief.

"Grandpa Emperor, once I finish making those grenades, I'm going to build a cannon too. Then no one will be able to bully us!"

Zhu Yuanzhang nodded.

"well!"

Then Zhu Yunwen took out a drawing from his pocket, which showed the arms and legs of some people.

"What's this?"

"Reporting to Your Majesty, these are prosthetics, artificial arms and legs. I specifically researched them for the wounded soldiers!"

Upon hearing Zhu Yunwen's words, Zhu Yuanzhang's face lit up with delight!

"My good grandson, this thing of yours is truly a blessing for the soldiers of our Great Ming Dynasty!"

It is said that swords and spears have no eyes on the battlefield, and many soldiers have been seriously wounded on the frontier, losing their hands and legs.

Since these soldiers could neither serve in the army nor survive, the Ming Dynasty had to spend a considerable amount of money every year to provide them with compensation.

With this, the soldiers could stand and walk like normal people and do some simple farm work!

This is the best thing ever!

"Grandpa Emperor, if you agree, I will have Zhang Shan do it right away."

"We must pay close attention to the quality of this thing, and make sure it doesn't hurt anyone!"

"Grandpa, rest assured, I will certainly live up to your expectations!"

On the main street of Kyoto.

Something unusual happened in the busiest area: a small building was covered with a black tarpaulin, and no one knew what it was for.

People passing by stopped to watch, but there was nothing but a black expanse.

People were talking about it and came to check on the changes at the restaurant every day.

Not only that, the nearby Zuihongyuan has also launched a new wine with an excellent taste, but there is less than five ounces available each day.

It's wishful thinking to even get a sip of this wine without spending several hundred taels of silver.

The news spread like wildfire throughout Kyoto, with people guessing that the restaurant was located beneath the black cloth.

One morning, people suddenly discovered that someone had emerged from behind the cloth.

They carried two tables, which were covered with colorful cloth bags.

"Don't miss out! We're opening in three days, and we're having a big sale right now! Just one tael of silver gets you a chance to win a prize!"

The common people couldn't understand what the man was saying; they were simply attracted by the colorful bags.

Even if everyone loves it, they wouldn't spend a penny to buy such a thing.

"It's just a tael of silver, I'll take it!"