cool summer [farming]

It's a pity that their laughter and laughter didn't last long, and they were interrupted by Ge Zhengxiu and Ning Ji who had returned from injuries.

A few unruly soldiers knocked on the back door of the Hou Mansion carrying a simple bamboo burden, saying that they were Ning Ji's subordinates. Today, General Ning got an excellent bow|crossbow, in order to test the accuracy of the bow|crossbow. , I replaced today's check with obstacle-breaking horse riding in the forest.

As a result, there were many mountains in the suburbs, and the soldiers and horses could not be deployed, so General Ning took the new soldiers around him out of the barracks to protect the forest alone, and went hunting at the foothills farther away!

Unexpectedly, the prey was missed. When the two went there, they were fine. When they came back, one had a broken leg, and the other had a bruised shoulder and dislocated an arm.

The military doctor in the barracks made a simple bandage for the two, and several of Ning Ji's subordinates discussed together and decided to send someone to quietly send the two back to the Hou Mansion.

Originally Ning Ji was unwilling, because he had lost such a big face, wishing he could grow up in the barracks and wait for his legs to heal before going back, but was stopped by his subordinates' words.

They have a huge army stationed on the outskirts of Kyoto, and they are always under the attention of the higher-ups. Therefore, they must not deal with things as casually as they are outside the pass. Today, the matter of Ning Ji has leaked out. He and Ge Zhengxiu may be fine, but the soldiers accompanying him are not. Not necessarily such good luck.In troubled times, if someone took advantage of the loophole and took the raft, it would be a meaningless dispute.

Several generals in the barracks used to be the former subordinates of Lord Hou. They grew up watching Ning Ji, and the elders could clearly understand Ning Ji's thoughts - they wanted to tell him to go home and lose someone else. Only then did I know how powerful it is.

Poor Ge Zhengxiu, he had just arrived at the barracks to report, and before he had put on his military uniform, he became famous for being injured when he accompanied General Ning to check his riding and shooting.

The servants of Hou's mansion took a closer look, isn't the person lying on the burden the eldest young master of their family?

Immediately, there was a riot. Fu Juyan and Mrs. Xie, who had just finished canning the jam, hurried over from the backyard when they heard the news, and hurriedly asked, "What's going on here? Why are you injured?"

The servants led the soldiers who sent them back to the steward to receive the reward. Ning Ji sat up from the burden, with a gloomy face, "Second Aunt, don't worry, I'm fine, I just accidentally fell down."

Mrs. Xie raised her hand and slapped him on the head, pointing to his bloody thigh and said urgently: "It's all right now? How can you fall like this? You were thrown from the city gate Did you come down?!"

Ning Ji remained silent with a pale face, obviously not wanting to mention this matter.

Ge Zhengxiu had no choice but to do it for him, and briefly explained the cause and effect. It turned out that the two of them rode out of the northern suburbs to shoot and hunt in order to test the newly acquired weapons. leg.

When Mrs. Xie heard this, she showed such an expression, but after all Ge Zhengxiu was responsible for this matter, she didn't want to embarrass my uncle in front of the servants, so she had to give Ning Ji a few words and let it go.

Ning Ji's face was sullen the whole time, Mrs. Xie couldn't do anything about his stubborn temper, she asked about Ge Zhengxiu's injury, endured her temper and ordered her servants to find a famous doctor outside the mansion, and give them a good diagnosis and treatment, and finally Gone, leaving them a few juniors to talk.

Fu Juyan touched Ge Zhengxiu several times up and down, and saw that he only had some bruises on his shoulders, so he felt relieved and signaled him not to worry about Mrs. Xie, and then looked at Ning Ji: "Brother, don't worry, I have something to worry about." Good healing medicine, I will bring it back for you to use later, and the wound will heal sooner." A hundred days of injury, let him, a martial brother, stay in the house honestly for more than three months, it is enough to grieve up.

Ning Ji nodded, and said helplessly: "Thank you." He stood up while supporting the wooden crutch prepared for him by the servant, and used the wooden crutch to move the white cloth on the burden, and ordered the servant, "Give me the crutch." Throw this thing away, it’s useless.”

The white cloth on the burden was removed, revealing several long white stones that looked like broken wood.

Fu Juyan felt familiar, picked it up and touched it a few times, it was cool and comfortable, "What is this?"

"What?" Ning Ji took a look at what Fu Juyan was holding, and was very annoyed, "They brought this crap back!"

Fu Juyan noticed that the injuries of the two were not simple, and quickly asked, "What's going on?"

Ge Zhengxiu said: "The two of us left the forest and headed north. We stopped at the foot of the mountains, and we met a rare red-flamed firefox. We followed it all the way out of the northern suburbs and entered the boundary of the Shihe mountains. There is no trace of the place, and the terrain is complicated, we almost lost our way, and finally turned around, but accidentally fell into a slanting cave, so we were accidentally injured."

"Is this something in that cave?"

"Yes, the cave is not very deep. The strange thing is that the fire outside is hard to extinguish, but the inside is completely opposite. The flowing water is bubbling, and ice and rocks are overgrown, just like cold winter."

"Running water, cool winter, ice stone... cool..."

Fu Juyan fell into memory.

Seeing this, Ge Zhengxiu and Ning Ji each picked up a piece and looked it over carefully. They found that if the filth on the surface was removed, the stone would be crystal clear and very beautiful, and it would feel cold in the hand. Ning Ji said: "If it is polished and smooth Holding it in your hand, it is similar to Tang Pozi in winter, and it may relieve the heat."

"Mrs. Tang?" Fu Juyan repeated.

Ning Ji thought he didn't know, so he explained: "The winter in the north is difficult, so it's okay to stay indoors. If you have to travel outside, someone will make cowhide into cakes or pillars and sew them, and put some hot water to warm your hands. It's done. More refined ones are small furnaces made of light iron, with opening and closing mechanisms, and the fire-resistant and smokeless silver charcoal is placed inside, which can last for a longer period of time."

"God!" Fu Juyan murmured, and then excitedly said: "What kind of shit luck are you guys doing?!"

His sudden cry made the two of them confused, so Ge ​​Zhengxiu hurriedly said, "What is the origin of this stone?"

"What is the origin? The origin is great! There is a great origin!"

Fu Juyan was so excited that he just wanted to spin around in circles. He firmly grasped Ge Zhengxiu's forearm, "Tell me about the size of the cave you discovered carefully. How many ice rocks like this are there? How many clusters are there? I don't want it." Vague, but specific! No other caves have been found? What is the topography of the place?"

In fact, combining the climate of Dongling and the cave mentioned by Ge Zhengxiu, Fu Juyan was already [-] to [-]% sure that the stone in his hand was clearly saltpeter!This kind of color shows that the purity is not low. From his point of view, it has at least reached the third-grade industrial standard.

Saltpeter, also known as flame saltpeter and potassium saltpeter, is chemically called potassium nitrate.Industrially, it is the raw material for making pyrotechnics | medicine, black | gunpowder, and glass. It is often produced in the soil in hot and dry areas, and it can also appear in caves and stone walls that have been infiltrated by water containing potassium nitrate for a long time.

According to its characteristic of absorbing a large amount of heat in a high-heat state, it can be used to make ice.

That's right, it is the powerful weapon of every Marysu traveler, the saltpetre that can be dug from the side of the latrine to purify it, and then heat the ice to produce it.

It never occurred to Fu Juyan that his time-travel trip was comparable to the characters in Mary Su's novels, and even tended to surpass them.

After all, he doesn't have to go door-to-door begging for soil from other people's toilets to cure the ice now...

Caught off guard rich gif.

Fortunately, he had a good foundation in high school, so he didn't give the little chemistry knowledge to the teacher, or else he wouldn't be able to recognize the saltpeter standing in front of him.

His performance made Ge Zhengxiu pay attention to it, and quickly recalled it carefully, telling what he saw at the time without revealing it.

Fu Juyan resisted the impulse and nodded solemnly, "Find some time, take me to that place to see it again."

He had to observe it himself before he could be sure whether there really was a saltpeter mine in the northern suburbs.

Ning Ji has been watching from the side, and seeing that Fu Juyan has not mentioned the special features of this stone, he asked: "What is the use of this stone? But what good is it for you to make tea?"

Although he is not very interested in tea and other beverages, but he was born in Dongling, so he can still distinguish the good from the bad of all kinds of tea.He especially likes the scented tea made by Fu Juyan, the taste is not the same after all.

As for Fu Juyan and their tea business, he is also paying close attention to them all the time. After all, he Ning Ji is thinking of relying on his younger brother for relief.

Of course, he was able to get acquainted with them as soon as the couple returned to Beijing, and it was also because he really admired Fu Juyan and Ge Zhengxiu. Needless to say, Ge Zhengxiu was from his old department. clear.

As for Fu Juyan, he originally thought that this little brother grew up in the countryside, even if he didn't have the affectation of the noble lady in Kyoto that he hates, he might be a newcomer, he should be careful to follow the rules and learn from those people. , that would be too boring.

Unexpectedly, he was very generous and generous, and he did not show any timidity in dealing with things. For such a little brother who has been in the countryside for a long time, his demeanor is admirable.

Fu Juyan knew that the two of them would not believe what he said with his mouth, so he simply did it for them.

He picked up all the saltpeter on the ground, weighed it, and felt that these few pieces were enough.

I'm afraid that the doctor will come in a while, and the servants will lead someone in, and pull the two of them closer to the next compartment. The compartment is for the host who is inconvenient to show up when the guests come to rest. To put it bluntly, it is for peeping. .

Few people come to this place on weekdays, so Fu Juyan looked around and felt relieved.

Bring in the melted ice basin from the outside, put it on the table, and bring the spare teapot from the house and put it on the table, touch the water in the ice basin, it is still a bit cool, then put it Waited for a while in the hot sun outside the window.

During this period, Ning Ji and Ge Zhengxiu kept watching, not knowing what he meant, seeing that he was not moving at this moment, they wanted to ask a little bit, but seeing Fu Juyan's serious and serious expression, they held back.

Fortunately, the waiting time was not long, and the water in the basin had basically reached normal temperature, so Fu Juyan put a few pieces of saltpeter in the basin.

He motioned to the two of them to take a look. They looked at it, but they didn't find anything special. Just as they were about to ask, Ning Ji suddenly said, "No, it's cool!"

Ge Zhengxiu also nodded, the brilliance in his eyes shining.

The temperature in the small compartment was very high, so after the saltpeter entered the water, the cool air released by absorbing the heat in the water was quickly captured by the two people with keen senses.

Only then did the two understand Fu Juyan's intentions. Feeling the temperature of the water in the basin getting colder, they were shocked.

If only a few stones like this can solve the problem of enjoying the cool air in summer, then Dongling will definitely usher in an unprecedented prosperity.

Ning Ji hurriedly asked: "This ice water, can it be eaten or used externally?"

Fu Juyan shook his head with a smile, "No hurry, just wait and see."

As he spoke, he put the teapot with excellent heat transfer performance into the basin.

I don't know how long it took, Ning Ji and Ge Zhengxiu, who were staring at the water basin, were surprised to find that the water in the basin had frozen, and there were even spots of icicles in the pot.

Ge Zhengxiu understood what he meant, and said, "This ice water is not edible, but it can make ice at such intervals."

"Yes, more than that. You should know the method of making table salt. Table salt is dried and precipitated from seawater to form crystals. The same is true for this saltpeter. It dissolves water to absorb heat to make ice, and vice versa, it precipitates into crystals when heated."

Ning Ji was overjoyed, "In this way, wouldn't it be possible to use it repeatedly?"

When did Tangling lack the scorching sun?As long as you use this basin of ice water and put it in the sun to dry, you can get the stone again, which is a wonderful workmanship.

"Therefore, the most urgent thing is to determine whether there is a saltpeter mine in the northern suburbs. If there is, ice making is feasible."

This matter is very important, and Ning Ji wished he could lead Fu Juyan there in person, but his leg was really bad, and he was picked up by the military doctor just now, and it was time for him to recuperate, so he felt very sorry, "Zhengxiu, you take Fu Juyan first." My little brother walked around in secret, bypassing the barracks, going out of the city and taking the trail outside the moat, remember not to say anything, just need to confirm whether it is the saltpeter mine that my little brother mentioned."

Ge Zhengxiu solemnly agreed.

Fu Juyan said: "Brother, don't be impatient. Don't neglect the matter of recuperating your injuries. Leave this matter to me and Brother Zhengxiu. We will discuss it later when we have definite news."