The time spent on the expedition was not as comfortable as being in the palace, so he visibly lost some weight.

In addition, they researched weapons, explosives, and medicines.

Unfortunately, Emperor Kangxi was too busy most of the time to study it, and Yinreng had even less reason to do so, as his mind was not on it at all.

However, they are all doing things, but their focus is on various aspects of national development, so only Mingxiu can do the research.

There's no way around it, the two of them need to accumulate merit, and naturally, the more merit the better.

Mingxiu was conducting experiments in the space with a serious expression, while Kangxi sat beside her, holding a book and seemingly studying something.

After a while, Mingxiu looked miserable and scratched her hair in frustration. This was just too difficult; she really couldn't do it.

Kangxi looked up and saw Mingxiu's irritable appearance. He shook his head helplessly, stood up, walked to Mingxiu's side, and took her hand.

"Alright, don't rush, take your time. We can study it together when I have time." He said, reaching out to try to straighten Mingxiu's hair, which he had just messed up.

Mingxiu sat on the sofa next to her with a bitter face: "God, this is really too difficult for me. You know, I was never this diligent when I was in school. If I had been this diligent when I was in school, I would have gotten into a 985 or 211 university, let alone a second-tier university."

"I told you not to rush, to take your time." Kangxi was quite helpless; this girl had told him not to rush.

“But people really want to develop it. If penicillin can be developed, it will play a huge role.” Mingxiu frowned.

She really wanted to develop penicillin, but Mingxiu was frustrated because she had no idea how these things were researched.

Moreover, when she was putting things into the space, she didn't put any medical books in it, so she could only search online to see how to make them.

But no matter how I look at it, I still can't quite understand it, and her materials aren't very complete, so I can only experiment slowly.

"It's alright. First, translate the names of these medicines into terms that the imperial physicians can understand. Then, have them research and try to develop them themselves. They are more professional, so they should be able to use them," Kangxi suggested.

"Yes," Mingxiu nodded. "How could I not have thought of that? The imperial physicians are definitely much more professional than her."

Perhaps it will actually work if the imperial physicians study it.

Mingxiu was delighted again. Looking at what Kangxi was holding, she raised her chin and asked, "Your Majesty, has this been successfully developed?"

Kangxi frowned at these remarks: "There are still some parts I don't quite understand. I'll think about them and then assign them to someone else to take charge of."

Mingxiu nodded: "Then Your Majesty must find a reliable person, after all, explosives are no small matter." As she spoke, she picked up her sweet milk tea and took a sip: "However, Your Majesty, in that case, we will need to research and develop a lot of things. Do we have enough money?"

Kangxi's face darkened. Looking at Mingxiu, he thought to himself, "You really know how to bring up the most sensitive topics."

However, this is a problem that must be faced. Although lifting the maritime ban did generate significant revenue for the country and enrich the national treasury considerably.

However, there were many things to deal with. Yinreng's research institute was requisitioned by Kangxi to research things that could increase grain production. This always was a major expense. Although the institute had started to generate revenue, many of the things they researched were ultimately beneficial to the country's development, so Kangxi dared not set the prices too high.

Another major expense was the Imperial Medical Academy. After witnessing the state of medicine in later generations and realizing how backward his own medical system was, Emperor Kangxi worked tirelessly to improve it and catch up in the field of medicine.

This business isn't making any money right now; it's just spending money.

Then there's the weapon research and development commissioned by Emperor Kangxi, which is currently in the experimental stage. Also, after the lifting of the sea ban, a navy needs to be organized, and the construction of the navy is an investment that only goes out and never comes back.

In addition to the occasional minor incidents, the national treasury's money is really being spent like water. Although income has increased, there are still many expenses. Chen Tingjing is like an old hen, splitting every penny in half, but he is still not wealthy.

"Take it slow. We don't have enough money, but these things still need to be done," Kangxi said with great concern.

Recently, some people have been suggesting that he should put the revenue from glass production into the national treasury.

Pshaw, wishful thinking. I would never do that.

He has a large family to support, with so many sons and princesses who will all get married in the future, and there are too many expenses involved.

Mingxiu nodded and began to think to herself how to increase the national treasury's revenue.

Is there anything else I haven't brought out? Oh, right.

"Your Majesty, there's also wool! Oh dear, I completely forgot about it. How could I have forgotten?" Mingxiu said excitedly, beginning to explain the uses of wool to Kangxi.

"Your Majesty, this wool is very powerful. As long as the wool is cleaned, it can be made into wool sweaters. Wool sweaters are super warm. I'll find you a few to take a look at."

Mingxiu excitedly ran to the clothing section and started looking for items, finding several pieces in no time.

"Your Majesty, look! This is a wool sweater. Isn't it warm? I don't know what I was thinking before, I completely forgot about it," Mingxiu said, somewhat embarrassed.

Kangxi touched the sweater in his hand, rubbed it, and felt his hands get warm instantly.

"Can wool really be made into wool sweaters?"

Mingxiu nodded: "Really, I'm not entirely sure either, but it's okay, we can look it up. It seems quite simple."

Kangxi nodded, clutching the sweater in his hands with great affection. If this were true, it would be wonderful; many people in the Qing Dynasty would not freeze to death in winter.

Thinking of Mingxiu reminds me of cotton. Cotton already exists in this era, but the yield doesn't seem to be very high.

Mingxiu didn't have any cotton seeds here, and she didn't know how cotton was grown, so she had never bothered with it.

Kangxi excitedly found a video about wool and started watching it. Mingxiu, seeing his excited expression, shrugged and went to watch TV.

Today's work is done; now it's time to rest.

As the weather gradually turned colder, Mingxiu enthusiastically invited Yinreng and Chenghuan to have hot pot together in the palace.

As Yinreng grew older, he could no longer frequently visit the inner palace. In addition, Emperor Kangxi began to assign him tasks. Being a young man, he was always restless, so he spent less time at Mingxiu's place. When he did come, he would do some work, have a meal, and leave quickly.