fantasy novels Chapter 565: At This Moment, The Princes Recalled The Fear Of Being Dominated By Arithmetic [Please
Chapter 565: At This Moment, The Princes Recalled The Fear Of Being Dominated By Arithmetic [Please
After a long time, the roars of the workers and people in the Xianyu area gradually subsided.
Then he followed the instructions of Prince Zhu Biao, Zhu Di, Zhu Fan, Zhu Di and other princes, and continued to complete his work.
It's just that compared to the previous working conditions, the workers and common people in the Xianyu area are now as if they have been injected with chicken blood and buffed, and their work efficiency has been improved to at least 200%!!!
Moreover, this situation gradually spread to several other areas, and even spread to the entire Haizhou City, as the previous public promises and statements by Prince Zhu Biao, Zhu Di, Zhu Fan, Zhu Di and other princes spread.
After promising to express his position, Prince Zhu Biao returned his attention to the fish ponds in front of him, looking at each fish pond and curiously said:
"Why are the channels on the left and right sides of these fish ponds different in width and depth depending on the water?!!"
“Do they do anything?!!”
The row of fish ponds in front of them, as well as the other rows of fish ponds, have the same channel on the left and right sides.
It's just that the channel on the left is one foot wide and one foot deep, while the channel on the right is only one foot wide and one foot deep~.
Yan Changqing looked at the channels on the left and right sides of the fish pond and said with a smile:
"The channel on the left is the supporting water channel of the fish pond."
"And if you want to drain the fish pond, you must open a hole at the bottom of the fish pond."
"Because the depth of the fish pond itself is only one foot deep, the hole at the bottom of the fish pond must be at a depth of one foot, so that the water can be easily drained out."
"So the channel used for drainage naturally needs to be dug to the same depth as the fish pond itself."
"The channel on the right is the water inlet channel for the fish pond."
“And if you want to transport water into the fish pond, you must open a hole above the fish pond so that it is convenient to transport water in.
“So the higher the position of the water conveyance hole is, the better, because this way the fish pond can hold more water.
"So the channel used to convey water only needs to be dug to a depth of one foot."
"So what we end up seeing is that the drainage channel on the left is one foot wide and one foot deep, and the inlet channel on the right is one foot wide and one foot deep.'
At this point, Yan Changqing became interested and further explained:
"Besides, don't look at this fish pond area, it looks ordinary.
"But in fact, its water supply system and drainage system are designed very cleverly."
"It utilizes the siphon principle, seawater tidal effect, water circulation, water filtration, water balance and many other principles." 1
"The final result is that when the sea water rises, the entire water supply system controlling the urban area will be like a sponge, continuously absorbing massive amounts of sea water."
"Then through the criss-crossing water delivery channels underneath, massive amounts of seawater that is either filtered or does not need to be filtered will be transported to various areas."
"For example, take the water delivery channel to the fish pond area in front of us, and then just open the water inlet on the upper right side of each fish pond, and then new seawater can be injected into the fish pond."
"When the seawater recedes, the entire urban drainage system will be like a squeezed sponge, and the used 'wastewater' will be continuously discharged into the sea along with the ebb of the seawater."
“For example, when the tide goes out, if you open the drains at the bottom of each fish pond, the turbid seawater will be discharged through the drainage channels.
At the end of the sentence, Yan Changqing's face also showed a faint look of satisfaction.
In order to solve the water and drainage problems of the entire controlled urban area, he spent more than half a month designing the water supply system and drainage system of the entire controlled urban area.
Finally, in the absence of electric power and steam power, seawater tides were used as power.
And by utilizing the principles of many other physical phenomena, we finally achieved the freedom of tap water supply and self-drainage of the entire controlled urban area.
It's just that Yan Changqing's words are more or less a joke to the princes Zhu Biao, Zhu Di, Zhu Fan, Zhu Di and others.
Because the princes Zhu Biao, Zhu Xi, Zhu Fan, Zhu Di and other princes also understood the previous part, the reasons and functions of the different heights of the two channels on the left and right of the fish pond.
As for the "siphon principle", "seawater tidal effect", "water circulation", "water filtration", "water balance", etc. in the latter part, they didn't understand any of them.
Looking at the confused expressions of Prince Zhu Biao, Zhu Di, Zhu Fan, Zhu Di and other princes, Yan Changqing sighed softly, feeling a sense of loneliness in his heart.
Once people feel lonely, they can't help but want to do something to relieve their loneliness.
For example, make things difficult for others or something.
Therefore, Yan Changqing looked at the princes Zhu Biao, Zhu Xi, Zhu Fan, Zhu Di and other princes, and said:
"Speaking of which, as your Royal Highnesses' doctor of arithmetic, I was responsible for teaching your highnesses to learn arithmetic knowledge."
"It has been a long time since I have tested your highnesses' arithmetic skills."
"I just happened to have a good example right in front of me."
"The fish pond in front of us is three feet long, three feet wide and one foot deep, but the water inlet of the fish pond is one foot above the fish pond, and the water in the fish pond cannot exceed the height of the water inlet.
"So, please tell me, how much water can this fish pond hold at most?!!"
The faces of the princes Zhu Biao, Zhu Fang, Zhu Fan, Zhu Di and other princes froze slightly. Yan Changqing's last sentence seemed to take them back to the Imperial Academy's arithmetic class a few years ago!
After asking a question, Yan Changqing was still not satisfied and continued:
“In addition, if the drainage outlet at the bottom of this fish pond is opened for drainage, the water in the fish pond can be drained out in three hours.
"And if you open the water inlet and fill it with water, the fish pond can be filled with water in two hours."
"So, please tell me, if you open the water inlet and drain outlet of this fish pond at the same time, how long will it take to fill the fish pond?!!"
At this moment, the princes Zhu Biao, Zhu Xi, Zhu Fan, Zhu Di and other princes couldn't help but recall the fear of being dominated by Yan Changqing's arithmetic problems in the past.
Seeing the faces of Prince Zhu Biao, Zhu Di, Zhu Fan, Zhu Di and other princes losing their smiles, Yan Changqing could not help but have a smile on his face and reminded:
"For the former, the arithmetic knowledge that needs to be applied is the volume (volume) formula."
*..........
"For the latter, the arithmetic knowledge that needs to be applied is the linear equation of one variable."
"I taught your highnesses these two kinds of arithmetic knowledge a few years ago.
"I think all your highnesses still remember it, right?!!"
"You shouldn't give it back to me so soon, right?!!"
Looking at Yan Changqing's teasing gaze, the faces of the princes Zhu Biao, Zhu Cang, Zhu Fan, Zhu Di and others all looked a little embarrassed.
Yan Changqing had indeed taught them the volume formula and the linear equation of one variable before, and they did have some vague impressions of it.
But now that several years have passed, can they say that they have completely forgotten all of them and "returned" most of them to Yan Changqing?!!
After admiring the embarrassed expressions of Prince Zhu Biao, Zhu Di, Zhu Gang, Zhu Di and other princes for a while, Yan Changqing shook his head slightly, and without too much embarrassment, he handed over a message:
"Looking at how confident your highnesses are, you should have already calculated it in your head."
"Sure enough, arithmetic problems of this level are still too simple for your highnesses."
...O
"Next time there are suitable examples, I will come up with some arithmetic problems that can match your highnesses' arithmetic level."
Hearing this, the princes Zhu Biao, Zhu Di, Zhu Fan, Zhu Di and other princes also breathed a sigh of relief and nodded immediately, indicating that this was the case.
After all, if you can't answer this in public, it would be a bit embarrassing.
But now that Yan Changqing said they figured it out mentally, then they figured it out mentally.
As for the answer to mental arithmetic, who else but Yan Changqing would dare to ask them?!!
Then, Yan Changqing looked at Zhu Xiongying and Zhu Jixi who were standing aside and said:
"Have you two figured it out in your head?!!"
Not long ago, he also taught Zhu Xiongying and Zhu Jixi the volume formula and the linear equation of one variable, which are mathematical knowledge in this area.
Zhu Xiongying and Zhu Jixi both shook their heads and replied:
"not yet."
"You need to use scratch paper to figure it out.
Yan Changqing nodded and said:
"Then after you go back today, each of you will use your scratch paper to calculate the two arithmetic problems you just mentioned.
"After you finish the calculation, go and check the answers with your father to see if the answer you calculated is consistent with the answer your father calculated mentally.
Zhu Xiongying and Zhu Jixi both responded in unison:
"is teacher!!!"
Prince Zhu Biao and Jin Wang Zhu Fan, who had just relaxed, heard the conversation between Yan Changqing, Zhu Xiongying, and Zhu Jixi's teachers and students, and Buqulu's expression froze again.
Princes such as King Zhu Xi of Qin, King Zhu Di of Yan, and King Zhu Ji of Zhou all looked at Crown Prince Zhu Biao and King Jin Zhu Fan with gloating eyes.
After all, if Zhu Xiongying and Zhu Jixi go to check the answer in the evening, if Prince Zhu Biao and Jin Wang Zhu Fan cannot give an answer, it will greatly damage their glorious image as fathers.
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