Queen Juan is here, run away

Chapter 220 As always
"This is saltpeter, a kind of ore with many uses. Fireworks and firecrackers are commonly used. In addition, when saltpeter dissolves in water, it absorbs heat and cools..."

In order to survive the hot summer without air conditioning, Lihua went to the Weaving Bureau to find saltpeter mines.

However, after all, the palace does not need the convenience of the outside, and there is only a response not long ago, which means that she has just used it for a long time.

Lihua didn't expect to leave for a while, and when she came back, she found the evildoer and dismantled her simple air conditioner.

At this moment, Lihua briefly explained how to use refrigeration for Yu Chigong, and used the freshly cooked sour plum soup to cover up for him how to make the fruit drink quickly achieve the cooling effect.

Yu Chigong picked up the ice-cold sour plum soup and looked at her with shining eyes: "Who is my concubine from, who knows so much?"

This woman always surprises him, what kind of talent he doesn't know.

It is a pleasure to be appreciated by a wise man, especially when it comes from a king.

Lihua said modestly: "Long live Lord, I have won the award, but I have studied extensively and learned some superficial methods. As for where the teacher came from, it is hard to say, because there are too many husbands who are concubines."

Counting from modern times to after time travel, plus those who were angered by her, there are really many, and it is difficult to list them in detail.

Yu Chigong couldn't help laughing, no wonder the little thief learned a lot of miscellaneous things, that's how it is.

He took a sip of the sour plum soup and felt that it tasted good. It should be the queen mother's favorite drink, so he asked someone to send some over.

After giving the order, I looked back at Lihua with sparkling eyes: "I heard that saltpeter was used in fireworks and firecrackers before, but I didn't pay much attention to it. Today I just saw what saltpeter looks like. You just said that saltpetre has many uses. Is there another way?"

Lihua's heart tightened, she knew that the evildoer had a bright mind, but she didn't expect such a bright mind.

She just mentioned a sentence that has many uses, and people caught the loopholes in her words and asked her.

In this era, the development and utilization of saltpeter is extremely low. It is generally only used to make firecrackers and fireworks, and the rest is used in traditional Chinese medicine.

But the biggest use of saltpeter is to make gunpowder and explosives, which are full of lethality. In this era of cold weapons, it is undoubtedly a weapon like Wang Zang.

And the reason why gunpowder hasn't been used in this era is not because they don't realize it. After all, they can already make firecrackers.

That's because no stable and controllable explosives have been developed yet, like making fireworks and firecrackers, you have to be careful, let alone making gunpowder and explosives that are hundreds of times more powerful.

By that time, I'm afraid that the explosives that can be used as weapons have not been researched yet. The people who researched have been killed countless times, and the damage is in the area, not just one person.

When Lihua looked through the history books of this dynasty, she discovered that there was a huge firework workshop explosion accident, which caused heavy casualties.

Since then, the imperial court has clearly stipulated that fireworks and firecrackers shall not be made in densely populated areas.

Now Yuchi Gong asked about other uses of Lihua saltpeter, obviously it was not a simple question.

As an emperor, what he wants to know most is the big use for the benefit of the country, not the small use for fun.

Lihua went through these thoughts in her mind for a moment, blinked her eyes, and said naturally: "Maybe there is, I will tell you after I study it."

To talk about the powerful explosives, Lihua still needs to carefully consider all aspects, and can't be quick and irresponsible, but she didn't say anything dead.

Yu Chigong couldn't help reaching out and tapping her forehead: "Aifei is still the same as before."

As shrewd and cunning as ever, the little thief.

Lihua let out an "Ouch", touched her forehead and cried out pitifully in pain.

Yuchi Gong laughed heartily.

He knew that Lihua didn't want to talk about it, so he didn't get entangled in this issue.

The two chattered a few more words, and after Yu Chigong drank the sour plum soup, he was ready to leave, and he had to go back to deal with the government affairs.

Before leaving, he wanted to "borrow" a simple air conditioner from Ewha, intending to have someone imitate it and make more for use in Cangchen Palace and Zhuangning Palace.

Lihua was very generous: "Long Live Lord, you can take it, but the concubine is going to give the queen mother better things, and I'm afraid I won't be able to use them in a few days."

Yuchi respectfully raised his lips and smiled: "I'll wait and see."

As for whether the queen mother is about to suffer, Yu Chigong felt that it would be good for his mother to be under the watchful eye of a thief, so that when he was busy with government affairs, his mother would not be watched and his body would be ruined for nothing.

At the Hall of Cold Fragrance.

Ever since the news of Wu Fang'er's death came, Chen Sisi knew that things were developing beyond her imagination and heading in an uncontrollable direction.

She knew that something must have gone wrong, so her heart was pressed with a heavy boulder, and she was always in a state of anxiety. She didn't sleep much last night, but she woke up early today.

Chen Sisi tried his best to calm himself down, and restrained himself from sending someone out to inquire about the news, so as not to let others see his impatience.

So when she heard the news that Lihua had been released, she was a little dazed for a moment.

Hearing that a servant died under Lihua, Chen Sisi instinctively felt that something was wrong, and then he understood it after thinking about it.

This is a pawn bail, no wonder people will be released.

Not long after, Chen Sisi learned that the emperor had sent two young eunuchs to serve in Tingli Courtyard, and now she couldn't sit still.

She personally took the maid of honor to the main hall with a gift, euphemistically calling it the empress of the main hall to relieve boredom.

Because Chen Sisi is the niece of the empress dowager's clan, the empress of the main hall got along pretty well with her.

After the two sides exchanged pleasantries, the empress of the main hall took the initiative to lament Wu Fang'er's death, but there was an imperceptible schadenfreude in her tone, as well as lingering fear and gratitude.

This was exactly Chen Sisi's purpose, she knew that this important matter would inevitably be brought up wherever she went in the palace.

She then lamented: "Me and Wu Meiren were sisters in Qunfang Hall, but after she awarded the beauty, she gradually alienated me. But I still think of her as a sister in my heart, but now..."

Speaking of her sadness, she wiped away her tears: "I don't know who did it. Has the Criminal Division caught the real culprit?"

When mentioning the murderer, the empress of the main hall comforted her, and then she couldn't help mentioning Lihua: "Tsk, I thought it was done by Wumei from Tingliyuan, but now that he has been released, I can't say for sure."

Chen Sisi wiped his tears with his hand: "Doesn't putting the person back means he's innocent? Why can't we say for sure?

The empress of the main hall smiled slightly and waved her hand to let her get closer.

Chen Sisi hurried over.

Then the empress of the main hall whispered to her mysteriously: "Didn't the Lord Long Live send two young eunuchs to Tingli Yuan? There is a lot of meaning in it, and it is inevitable for you newcomers to the palace not to know these things..."

Tell me about those bastard things that the little eunuch of Cangchen Palace did in the past.

The empress of the main palace gritted her teeth and concluded: "You said sending these evil stars over there would be a good thing."

Chen Sisi was dumbfounded when he heard that, for the first time he knew that the little eunuch in the man's palace was hated by the concubine so much.

But those stupid things you did sound really stupid...

The empress of the main hall was very satisfied with her reaction, and shook the round fan in her hand: "Besides, didn't a slave leave under Wu Meiren? There is an old saying that goes well, when the tree falls and the monkeys scatter, we outsiders don't know Wu Meiren's current situation, but The servants under her choose to leave at this time, doesn't it mean that she is in a bad situation?"

"Your Majesty is right." Chen Sisi echoed, hiding his thoughts.

So, it would be best if...

(End of this chapter)