"This is saltpeter, an ore that has many uses, fireworks and firecrackers are commonly used, and saltpeter absorbs heat and cools when dissolved in water......

In order to survive the scorching summer without air conditioning, Pear Blossom deliberately went to the Weaving Bureau to find a saltpeter mine.

But after all, the palace doesn't have to be convenient outside, and there was a response not long ago, so she didn't use it for long.

Rika didn't expect to leave for a while, and when she came back, she found that the demon had dismantled her simple air conditioner.

At this moment, Pear Blossom briefly explained the use of refrigeration for Wei Chigong, and used the freshly cooked sour plum soup to cover up for him how to make the fruit drink quickly achieve the icing effect.

Yu Chigong picked up the cold sour plum soup and looked at her with a sparkling look: "Who is the teacher of the concubine, who knows so much?"

This woman always surprises him, and he doesn't know what other talents he has.

It is a pleasure to be appreciated by wise people, especially when it comes from the emperor.

Rika modestly said, "Long live the Lord has won the award, but he has dabbled in a wide range of fields and learned some fur methods. As for where the teacher is, it's hard to say, because there are too many gentlemen with concubines."

From the modern number to the time crossing, plus the people who were angry with her, there are really a lot, and it's hard to list them in detail.

Wei Chigong couldn't help laughing, no wonder the thieves have a lot of miscellaneous learning, so it is.

He took a sip of sour plum soup, and felt that it tasted good, which should be what the Queen Mother liked to drink, so he asked someone to send some over.

After giving the order, he looked back at the pear blossom with shining eyes: "I have heard of saltpeter used in fireworks and firecrackers before, but I haven't paid much attention to it, and today I have seen what saltpeter looks like. You just said that saltpeter has a lot of uses, but there is another way?"

Rika felt a tight heart, she knew that the demon brain was bright, but she didn't expect it to be so bright.

She only mentioned a little bit that it was very useful, and people seized on the loophole in her words and asked her.

In this era, the development and utilization of saltpeter was very low, and it was generally only used to make firecrackers and fireworks, and the rest were also used in traditional Chinese medicine.

However, the biggest use of saltpeter is to make gunpowder and explosives, which is full of lethality, and in this era of cold weapons, it is undoubtedly a weapon like Wang Bang.

And the reason why gunpowder has not been used in this era is not because I am not aware of it, after all, I can already make firecrackers.

That's because we haven't yet developed stable and controllable explosives, and we have to be careful in making fireworks and firecrackers, let alone gunpowder explosives that are 100 times more powerful.

At that time, I am afraid that the explosives that can really be used as weapons have not been researched, and the people who studied them have been killed countless times, and it is an area of damage, not just one person.

When Ewha was looking through the history books of this dynasty, she found a huge fireworks shop explosion accident that caused heavy casualties.

Since then, the imperial court has clearly stipulated that fireworks and firecrackers shall not be made in places where people live intensively.

Now Captain Chi Gong asked about other uses of pear blossom saltpeter, obviously not a simple question.

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

Rika went through these thoughts in her heart for a moment, blinked, and said naturally, "Maybe there is, I'll tell you when the concubine studies it."

To say the powerful explosives, Pear Blossom also needs to carefully consider all aspects, and she can't be quick and irresponsible, but she didn't say it to death.

Wei Chigong couldn't help but reach out and tap her forehead: "Ai Fei is still the same as always."

As shrewd and cautious as ever, this little thief.

Pear blossom followed the "ouch" sound, touching her forehead pitifully and crying out in pain.

Wei Chigong laughed heartily.

He knew that Rika didn't want to say it, and didn't dwell on this issue.

The two talked a few more nonsense, and after Wei Chigong drank up the sour plum soup, he was ready to leave, and he had to go back to deal with the government.

Before leaving, he wanted to "borrow" a simple air conditioner from Lihua, planning to let people imitate it and make more for use in Cangchen Hall and Zhuangning Palace.

Pear Blossom was very generous: "Long live the Lord although he takes it, but the concubine is going to give the Queen Mother a better one, I'm afraid I won't need it in a few days."

officer

Chi Gong raised his lips and smiled, "I'll wait and see."

As for whether the queen mother is going to suffer, Wei Chigong thinks that it is not bad for his mother to have a thief in charge, so that when he is busy with government affairs, his queen mother has no one to watch, and she spoils her body in vain.

Hanxiang Hall.

Since the news of Wu Fang'er's death came, Chen Sisi knew that the development of things was beyond her imagination and was going in an uncontrollable direction.

She knew that something must have gone wrong, so her heart was weighing on a heavy boulder, and she had been in a state of uneasiness, and she had not slept much last night, and she woke up early this morning.

Chen Sisi tried to calm himself down and restrained himself from sending people out to inquire about the news, so as not to let people see that he was anxious.

So when she knew the news that Pear Blossom was released, she was a little stunned for a while.

Hearing that a slave had died under the pear blossom, Chen Sisi instinctively felt that something was wrong, and then he figured it out.

This is an abandoned pawn to protect the car, no wonder the person will be put back.

Soon after, Chen Sisi learned that the emperor had sent two little eunuchs to serve in Tingli Courtyard, and she couldn't sit still at all.

She personally took the personal palace maid and went to the main hall with a gift, and said that she was worthy of the mother of the main hall to relieve her boredom.

Because Chen Sisi is the niece of the Queen Mother and Zong, the mother of the main hall gets along with her quite well.

After greeting each other on both sides, the mother of the main hall took the initiative to lament Wu Fang'er's death, but her tone contained a trace of imperceptible schadenfreude, as well as a little palpitation and happiness.

This is exactly the purpose of Chen Sisi, she knows that wherever she goes in the palace now, she will inevitably mention this important matter.

She lamented: "I had a good time with Wu Meiren in the Qunfang Palace, but after she rewarded the beauty, she gradually distanced herself from me. But I still think she's a sister in my heart, but now ......."

Speaking of the sad part, she wiped away her tears: "I don't know who made the poison, did the Punishment Division catch the real culprit?"

At the mention of the murderer, the mother of the main hall comforted her twice, and couldn't help mentioning the pear blossom: "Tsk, I originally thought it was made by the martial artists of Tingli Temple, but now that the person has been released, I can't say that it is accurate."

Chen Sisi wiped his tears from his hands and paused: "Doesn't letting people back mean that they are innocent, how can it be said that it is inaccurate?

The mother of the main hall smiled slightly, beckoned her hand, and asked her to come closer.

Chen Sisi hurriedly leaned over.

The mother of the main hall said to her mysteriously, "Didn't Lord Banzai send two little eunuchs to Tingli Courtyard? There is a great meaning in it, and it is inevitable that you new people who enter the palace will not know these things......

Let's talk about what the little eunuchs of Cangchen Hall did in the past.

The lady of the main hall gritted her teeth and concluded, "You said that it would be a good thing to send these evil stars over."

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

But those bastard things that I did sounded like a bastard......

The main hall lady was very satisfied with her reaction, and shook the fan in her hand: "Besides, isn't there a slave under Wu Meiren? There is an old saying that the tree falls and falls, and we outsiders don't know the current situation of Wu Meiren, but the minions under her choose to leave at this time, doesn't it best indicate that she is in a bad situation?".

"Mother has a point." Chen Sisi echoed and hid his thoughts.

In this case, it is better to ......