Looking at the middle-aged man standing at the door, there was only one voice echoing in Du Shen's mind.

I'm Cao! Isn't this Emperor Hongji?!

Didn't they all say that your old man is diligent, and you still do things in this fucking three-day two-end micro-service private visit?

He didn't dare to slack off, bowed down and saluted: "The minister didn't know that His Majesty was coming, and there were rudenesses, so I ask Your Majesty to forgive me." ”

Hearing the voice of their own master, Zhang Hao and the others also reacted, and suddenly turned around and saw Emperor Hongzhi, how dare they fall behind, and they also saluted.

"No need to be polite!"

Emperor Hongzhi waved his hand, his face was flat.

He looked at the vertical algorithm on the blackboard, showed a thoughtful look, nodded in approval, and then looked at Zhang Hao and the others who were doing the question, and his heart became bitter again.

If other people's children are apprentices, aren't their own children apprentices?

It's all the same teacher!

Why is it that other people's families have learned something unfathomable, and their own children have only learned to grow cabbage?

Emperor Hongzhi glared at Du Shen resentfully, what can my son become a talent!

The latter was suddenly confused, and said that women are in a bad mood for a few days every month, and they haven't heard of such a thing as men?

The corners of Du Shen's mouth twitched, and he asked, "Dare to ask Your Majesty why you are here?" If it is useful to the ministers, please do not hesitate to command! ”

Emperor Hongji walked in with his hands behind his back.

As he walked, he said, "I didn't need your place, I just wanted to find you about the vegetable greenhouse this time." ”

Du Shen suddenly explained: "So that's the case, then I don't know what Your Majesty wants to know?" ”

Emperor Hongzhi looked at the blackboard and nodded, but he was interested in numbers again: "Du Qing is indeed talented, and this Ming number is something you made up again!" ”

Du Shen was a little confused, and replied: "I can't afford to be praised by Your Majesty, but the minister just thinks that the use of Chinese characters is too cumbersome, so he simplifies the Ming numbers." ”

Emperor Hongzhi nodded noncommittally, and turned the topic back again: "I heard the prince say that in addition to growing cabbage, the vegetable greenhouse can also grow wheat and other things, and even harvest three times a year, but that's it!" ”

Three harvests a year?

Du Shen gasped, he didn't remember saying such a thing!

The simple version of the vegetable greenhouse is at most a vegetable, as for growing wheat? Even if you cut off his head and use it as a light bulb, you won't be able to grow it!

"Your Majesty doesn't know, the vegetable greenhouse can only be used to grow vegetables for the time being, and the requirements for varieties are very high, if it is not cold-tolerant, it can't be planted at all, as for planting wheat, it is even more useless!"

The so-called pretending to be forced to move thunder!

If it is a vegetable greenhouse in the future, it is easy to grow wheat or other grains, but forget about this one!

This is forced, Mr. Du can't pretend.

Suddenly!

As soon as Du Shen's words fell, a man's clear voice suddenly came from outside the classroom.

"Your Majesty, it seems that the minister's guess is right, the vegetable greenhouse is not as magical as you think."

After speaking.

In Du Shen's surprised gaze, another man walked in.

This person has a fair complexion, a handsome spirit, and a good temperament, even if he is wearing coarse linen clothes, but people can't help but associate him with Brother Gongzi.

He is none other than Yang Tinghe.

Prince Zhu Houzhao has often come to Dujia Village recently, and worshiped Du Shen as a teacher, he has long wanted to see Du Shen, who has invented many magical things, who is it, so this time Emperor Hongzhi Weifu paid a private visit, and he asked for his order.

"Yang Tinghe, I've seen Brother Du!"

I have to say that Yang Tinghe's appearance is extremely good!

Du Shen glanced at him, although he still maintained a smile on his face, his heart was sour.

Since he came to Daming, there are only two people who have made him lose confidence in a certain aspect, one is Liu Quan, who is a talented person, he is ashamed of himself, but that is not in appearance, and the other is Yang Tinghe in front of him.

What can you do if you look so handsome, you have the ability to compare with Liu Quan!

……

Du Shen thought maliciously in his heart, but he couldn't see the clue on the surface, he arched his hands and smiled: "I've seen Brother Yang." ”

Emperor Hongzhi saw the performance of the two in his eyes, and sighed: "When I came, I talked to Yang Qing about the vegetable greenhouse, but I never thought that Yang Qing's guess was the same as what Du Qing said, it seems that I am too greedy." ”

Du Shen touched his nose and replied: "It's just that it's impossible to do it for the time being, but it doesn't mean that it can't be done." ”

Yang Tinghe shook his head and said: "The growth of grain is the number of days, and the people take the sky as their destiny and the earth as their livelihood, how can it change?" ”

The corners of Du Shen's mouth twitched, why did he hear this so familiarly?

Isn't this the set of things that Confucianism has put out to unite heaven and man, idealism is unacceptable!

"Although the growth of cereals depends on the sky, it also depends on the climate of the four seasons, nothing more than humidity and temperature, as well as light and soil, if you can control the changes, you can plant whatever you want."

Du Shen glanced at Yang Tinghe lightly, and vaguely felt that the other party didn't seem to be looking for trouble.

Yang Tinghe nodded noncommittally: "Dare to ask Brother Du, if you say, how to control the humidity and temperature?" ”

Emperor Hongzhi was also curious, this was not the first time he had heard knowledge from Du Shen's mouth that ordinary people could not understand.

Du Shen shrugged his shoulders and said, "This is simple, follow me to the vegetable greenhouse, and you will know it at first sight." ”

With that, the three of them left the classroom and walked towards the vegetable greenhouse.

……

The vegetable greenhouse is at the back of the college.

After walking about thirty steps, Emperor Hongzhi saw a vegetable greenhouse the size of half an acre from a distance.

Well......

It's mediocre and a little ugly.

But when the door of the vegetable greenhouse was opened, after entering, Emperor Hongzhi's eyes were full of amazement.

By the light, he saw that in the entire vegetable greenhouse, there were a lot of Chinese cabbages planted horizontally and vertically, and the green ones were quite gratifying.

But then, Emperor Hongzhi felt bitter in his heart, and this vegetable greenhouse also had his own son's help.

I didn't see how good the books were, but I did these chores diligently.

He had already thought about what would happen to the crown prince Zhu Houzhao, who inherited the throne a hundred years later, when he talked about state affairs, he was speechless, and when he talked about farming, what was the way? Estimated ......

Should? It's not too much!

Emperor Hongzhi is happy in suffering, and it is not a bad thing for the prince to be happy, at least it is much better than liking martial arts!

Yang Tinghe had a full view of all kinds in the vegetable greenhouse, although Du Shen robbed his students, but just talking about this, it had to be admired.

But then again, how to control temperature and humidity?

He was curious!

Du Shen led them into the greenhouse, and soon a bucket appeared in front of them.

There was also a straw rope stuck in the bucket, which was placed on the ground, and when you pinched it with your hand, water poured out of the straw rope.

Du Shen pointed to the bucket and straw rope and said, "This thing is the way to control the humidity." ”

Humidity is not the same as watering, and plants cannot grow without water, but too much watering will make the root system unable to firmly root in the soil and hinder growth.

Therefore, put a bucket and use a straw rope to divert water, and slowly volatilize in the air, which will increase the humidity.

Emperor Hongzhi squatted down and looked carefully at the straw rope, the cabbage around the straw rope, with a faint moisture on the leaves.

He touched the bucket again, his hands were more moist, and he nodded thoughtfully: "Yang Qing, it seems that what Du Qing said does make some sense." ”

Yang Tinghe nodded in praise.

Du Shen continued to walk, saying as he went: "In the greenhouse, there will be such a bucket every ten steps to control the humidity, if the humidity is too high, some will be taken away and thatched grass will be added, so that the humidity will be lowered and the temperature will rise." ”