was interrupted like this, and he lost the interest in tasting tea, so Xue Lang directly put away the jar of tea and prepared to take it back to Tingfeng Courtyard.

This brazen appearance provoked a meaningful glance from Princess Pingyang, but she didn't say anything. Xue Lang was about to say goodbye and leave, but Princess Pingyang suddenly said: "I almost forgot about business!" ”

Xue Lang hurriedly clenched his fists: "Your Highness, please speak." ”

Her Royal Highness the princess said: "I have asked people to find the saltpeter you want, two cars are enough?" ”

Xue Lang Khan: "Your Highness, there is more than enough, it will not be used up in a few years!" ”

Her Royal Highness the Princess laughed: "It's good to be enough, but I'm afraid that it will be insufficient, even if it is redundant." So, what does this saltpeter have to do with the ice cellar? Why does Youyang say that you need saltpeter to build an ice cellar? ”

This is a door-to-door pretense opportunity!

Xue Lang smiled and asked, "Dare to ask Your Highness, can the ice cellar be dug?" ”

"It's been dug a long time ago, just waiting for saltpeter, and now the saltpeter is also there, just waiting for the young sun."

Her Royal Highness the princess is quite cooperative. Xue Lang said: "Since the saltpeter has arrived, it is better to choose the day than to hit the day, just today, and then prepare a few large pots and thinner, smaller than the wooden pots of the clay pots, stoneware is on the line, cheap and easy to make." ”

"Go buy it quickly."

Princess Pingyang commanded left and right, and someone rushed to prepare. You see, in ancient times, being a landlord class was so sour, just move your mouth, and have your own servants who break their legs.

The ice cellar was built in the shade of the farm, near the foot of the mountain, and was originally a cave, cool and dry. By the way, it is customary to call it an ice well at this time.

The group went to the farmstead. Xue Lang was still riding his bicycle, and Her Royal Highness the Princess was riding a horse, watching Xue Lang ride a bicycle and follow her horse leisurely, looking at it quite curiously, it seemed that he was quite interested in bicycles. When he arrived at the farm, he did not alarm the people in the farm, and went straight to the ice well that had been built.

Ice storage was a very precious thing in ancient times, and ice cubes were only enjoyed by the elite in the summer. Therefore, a house was built on the ground at the ice well, and after the ice was stored, someone was to be sent to guard it.

Xue Lang asked people to move the saltpeter and basins to the idle room, and asked someone to fetch water, and was about to play a trick of condensing water into ice, when Princess Pingyang suddenly spoke: "Left and right, all go out, retreat ten feet, and those who approach for no reason will be tied up first!" ”

"Whoa!"

Her Royal Highness the princess looked solemn, and after giving the order, she also wanted to avoid it, Xue Lang smiled: "Your Highness doesn't need to avoid suspicion, this is just a simple chemical reaction." Speaking of which, summer is coming, Your Highness, why don't we do this ice business, okay? If I produce technology, His Highness will provide people and materials, and his subordinates will take forty percent, and His Highness will take sixty percent, okay? ”

Princess Pingyang rolled her eyes and said, "Twenty-eight!" I'm eight you're two! ”

You're only two! Your whole family is two!

But this can't be said, Xue Lang coughed and said, "Your Highness, this is too much, it can't be done!" Technology is very important, although it is simple, but if there is no technology provided by me, this business can not be done, the subordinates are already very kind, as long as forty percent, His Royal Highness invests more, divide you sixty percent, how good! That's it, right? ”

Her Royal Highness the princess smiled: "Sanqi! You're three, I'm seven! ”

Even if the beauty smiled like a flower, Xue Lang was unmoved: "No! Just four or six! ”

This is also the plan that Xue Lang just remembered. Selling ice is more cost-effective than selling handmade soap, as long as there is saltpeter, it is simply a no-capital transaction, every summer is the peak season for sales, this year, every family can not have the conditions to store ice, right? Besides, ice storage is a very troublesome thing, there are ready-made purchases, and the cost is not too high, I believe that many families are still willing to buy ready-made.

Xue Langyou said: "Your Highness, this transaction has a head, as long as you do a good job of technical secrecy, you can do it every year, except for saltpeter, it is almost a business!" You can do it anywhere! Four-six, okay? ”

Xue Lang lobbied Princess Pingyang hard. Princess Pingyang asked, "Why is Youyang so obsessed with making money?" But it's not enough? ”

Xue Lang shook his head and said, "If it's just me, of course Yulu is enough." However, now that there is more Ah Lin, and in the future, I may marry a wife, have children, and support my family, it is not enough to rely on Yulu, so I naturally have to plan more and save money first. ”

Princess Pingyang muttered: "This reason is reasonable. ”

Xue Lang hurriedly said: "It's not just reasonable, it's just to the point!" ”

Princess Pingyang laughed and said, "Yes! I made a decision with Youyang, you are four and I are six, Youyang will give out the technology, and I will give everything that is left, and the person who does this business will not need to be looked for again, and he will be sent directly to him, and he will not forget the habits of the businessman, so let him be a businessman. ”

This Xue Lang doesn't comment, Her Royal Highness the princess is in charge of her own decisions.

Everything is decided, with the character of Her Royal Highness the Princess, since she has agreed, she will naturally not change her hexagram again. Xue Lang finally has a stable way to make a living, and his motivation is a little higher.

She did not let Her Royal Highness avoid it, so she put the clay pot in the large basin, poured water on both, and then took a wooden spoon, spoonful by spoon, and stirred the ground saltpeter into the water of the large basin—

Stirring and stirring, the water in the clay pot became colder and colder, and after a while, it condensed into ice!

Princess Pingyang couldn't help blinking her eyes several times in a row, but she was calm, except for blinking her eyes a few more times, she didn't ask questions, just watched Xue Lang make a basin, and then make a basin, and operated several times in a row to make a lot of ice cubes.

These pots are open. Someone took the clay pot with ice cubes and roasted it on the fire a little, and the ice cubes melted a little and could be easily poured out.

Princess Pingyang watched Xue Lang operate several times before she couldn't help but ask, "Why is this?" Why does water condense into ice? ”

Xue Lang explained briskly: "Because of saltpeter. According to the chemical principle, saltpeter contains something called potassium nitrate, which can absorb the heat in the water when dissolved in water, so the water condenses into ice. However, the ice condensed by saltpeter water cannot be eaten directly, so it is necessary to use a separate clay pot to separate it, and the ice in the clay pot will be fine if you eat it. Also, the ice in the wooden basin, wait for the water to be poured out, and the impurities can be thrown away. After boiling in water, the precipitated crystals can also be reused. ”

Her Royal Highness listened with great fascination: "Chemistry is such a magical subject...... I'd love to see it. When will Youyang write chemistry out for me to see? ”

Xue Lang listened to the pain of the egg, chemistry is a subject that he only started to contact in the third year of junior high school in modern times, which shows that learning chemistry requires other disciplines as a foundation. Princess Pingyang has never learned the knowledge of other disciplines, how can she learn chemistry! So, this is a model of shooting yourself in the foot?

Xue Lang had to say perfunctorily: "If there is a suitable opportunity, I will write it out and show it to His Highness." ”

The implication is that if the opportunity is not suitable, it will not be written, and His Highness will not need to look at it.

Princess Pingyang didn't know if she heard this, so she only nodded indifferently. After a little hesitation, he said, "I will order someone to build a few large ice wells and store some ice, and then this transaction can begin in the summer." ”

"Your Highness is happy to cooperate."

Xue Lang happily bowed his hand to Her Royal Highness the Princess. Her Royal Highness smiled and nodded, and turned to go back to the house.

Keeping Xue Lang, she went back to her house by herself, sent someone over, first learned the method of ice making with Xue Lang, and then Xue Lang could get out of his body and command on the side, and when these people got started, it was a lot of ice making, and the ice well was filled first.