Seeing Yu Wuwu's solemn expression, Liu He gushed endlessly.

"On the same piece of land, cotton is planted less than hemp."

"However, the weight of cotton consumed to spin into the same heavy yarn and then woven into the same heavy cloth is only one-third of the weight of hemp."

Liu He stopped when he said this, and looked at Yu Wuwu with a slightly provocative gaze.

"Your Highness, you have something to say."

"I want to test you, the same piece of land, if it is used to grow cotton, can you spin a few more pieces of cloth than growing hemp?"

It turned out that Liu He was going to take a test of Yu's worry-free arithmetic.

Without the slightest hesitation, Yu Wuwu took out a piece of wooden slip that had been shoeed clean without changing his face, and said while writing.

"Suppose a piece of land can produce one piece of cotton, then it can produce one and a third of hemp."

"Suppose one cotton cloth needs one cotton, then one linen cloth needs three linen."

"Therefore a piece of cotton from a piece of land can be woven into a piece of cotton cloth, and a piece of land of hemp can be woven into a quarter and a quarter of a centimeter of linen."

"In the end, it can be seen that the cloth that can be woven from cotton planting in a piece of land is more than twice as much cloth as the cloth that can be woven from hemp."

Yu Wuwu's calculation was fast and accurate, and Liu He applauded again and again after listening.

"Yu Qing has learned arithmetic well."

"It's all taught well by His Highness."

"However, Yu Qing still has some things missing."

"Your Highness, please."

"It takes much less manpower to harvest cotton from a field than it does to harvest hemp from a field."

"It takes much less manpower to weave a cotton cloth than it does to weave a linen cloth."

When Liu He said this, he stopped again, raised his chin, and asked Yu Wuwu to continue.

"So, no matter how you calculate it, it is much more cost-effective to grow cotton than hemp, and it is much more cost-effective to weave cotton than to weave linen."

"Yu Qing is very smart." Liu He clapped his hands and said.

"Your Highness still teaches well." Yu Wuwu nodded slightly.

"Since it is more cost-effective and convenient to spin cotton cloth, then people in the world naturally no longer wear linen clothes, but only cotton clothes."

"Cotton grows fast, cotton cloth weaves fast, naturally there are merchants who will specialize in cotton cloth, and then cotton cloth will be woven more and more, and the price will be lower and lower."

"And when the people found that it was better to buy cloth directly than to weave it themselves, they naturally stopped weaving it themselves, but went directly to the market to buy it."

"Then the spare time can be invested in farming, can it make the people's lives richer?"

Liu He didn't leave any suspense this time, and said all these words in one go.

Some of the gloomy Changyi halls became brighter and warmer after Liu He said this.

The sunlight shone obliquely into the main hall, illuminating the countless wandering dust that was circling and flying.

Yu Wuwu pondered carefully, nodded, and finally understood what His Highness meant.

"It seems that this little cotton is really useful."

In fact, Liu He still didn't say anything, he let it be too shocking and scared this young Langzhong.

These woven fabrics can not only be sold to the people of the Han Dynasty, but as long as the price is low enough, they can also be sold to Guishan, the Western Regions, and even to Daqin.

Unlike expensive silk, not only those rich people can afford to wear cotton cloth, but the most inferior people can also afford to wear cotton cloth, and they can make more money with small profits but quick turnover.

At that time, all the people in the world will wear cotton cloth woven by the Great Han.

What kind of situation would it be to be able to weave such a large number of cotton cloth men, even Liu He didn't dare to imagine - under this huge business, I am afraid that there will be many things that make Liu He feel familiar and unfamiliar.

Although Liu He and Dahan still have a long way to go between now and then, just thinking about it is enough to make people feel excited and excited.

"Okay, the widow is already hungry, Yu Qing will accompany the widow to eat, and the widow will cook you a few good dishes!"

"Zi said, the gentleman is far away from cooking. Don't go to the East Kitchen, after all, ......"

"The son also said: Benevolence is left in the heart, and pigs and sheep are pierced through the intestines."

Yu Wuwu thought about it, whether it was "Qi Analects" or "Lu Analects", there didn't seem to be such a vulgar sentence.

"Dare to ask Your Highness, which article in the Analects does this sentence come from, "Asking Politics" or "Xueer"?"

Liu He replied with a look of tribulation: "This son is not the other son. ”

"Which one is that?"

"Liu Zi!"

Yu Wuwu thought for a few breaths, and finally remembered the scene when he called himself Yuzi when he was eating meat and buns in the carriage yesterday, it turned out that His Royal Highness was paying tribute to this matter.

"Your Highness's clever words are very quick to learn."

"That's Yu Qing, you teach Langzhong well, hahaha!" Liu He laughed three times, stood up from the throne with satisfaction, and walked towards the outside of the Changyi Palace.

Behind him, followed by Yu Wuwu with a black face, and he seemed to be saying something disrespectful.

Because he was in a very happy mood, Liu He was in charge of the East Kitchen and made a few good dishes with the existing ingredients and cooking utensils.

One is leek egg soup and the other is steamed egg custard.

The ingredients are ordinary, but they are not ordinary because of the unusual cooking methods.

In particular, when the bowl of golden egg custard with dried shrimp came out of the kettle, it opened the eyes of those chefs and slaves who had only seen all kinds of vegetable soup and meat soup in the "messy stew" style, they had never seen such an easy and durable food.

The younger maids next to them even swallowed their saliva while watching.

The chefs looked at Liu He with reverence, eager to bow down.

Under the "assistance" of these two dishes, Liu He and Yu Wuwu's meals are much larger than usual. I ate two more bowls of bean rice alone, and even chewed a few more pieces of abominable jerky.

Liu He finished planing the last mouthful of bean rice in the lacquered bowl, wiped his mouth, stood up and said, "The widow is going back to the palace to rest, and he will wake me up in half an hour." ”

"Zai Yu sleeps for the day. Zi said: "Rotten wood cannot be carved, and the wall of dung cannot be enclosed." ”

Yu Wuwu sat on the couch and said coldly from behind Liu He, not caring at all about the egg custard that Liu He had just made.

"Hmph, a good sleep is indispensable, and a nap has a unique flavor, if Yu Langzhong has experienced the taste of this day's sleep, he will not say that the widow is rotten wood and dung."

After saying this, Liu He, who was a little annoyed, left the East Kitchen with his sleeves and went straight to the direction of Fuyao Palace.

However, Liu He's "day and sleep" today is destined not to be happy, and when he was just in bed and you were in a daze and ready to talk to Zhou Gong about the importance of cotton again, the door of the Fuyao Hall was knocked on with a bang.

"Who!?" Liu He shouted angrily and full of collapse.

"Tell Your Highness, it's a subordinate." Yu's voice came in.

"Didn't the widow say that he would call me in half an hour!" After Liu He finished speaking, he pulled the quilt and covered his head.

"Your Highness, it's Tian Bu who is here."

This name was like a needle, piercing Liu He's eyebrows, and his whole person immediately sobered up.

Liu He sat up from the bed, brushed his thoughts, lifted the comfortable and smooth brocade quilt, jumped off the bed barefoot, and ran towards the outer hall.