Chu Junhan was silent for a moment, sat down next to the young man in white, and gently tugged at his sleeves, like the day at the gate of Xiahe City, he lowered the posture of the commander in a coaxing tone, "Xianggong, you don't want to be like a woman like me, okay?" ”

Wei Ziyuan immediately had a smile on his face, "What did you just call me?" ”

"Nothing." Chu Junhan's eyes dodged, and he twisted his head aside.

The young man in white was full of energy, with an excited smile on the corner of his mouth, and put his arm around Chu Junhan's shoulder, "My daughter-in-law actually knows that she feels sorry for me, so you don't care about it as a husband." In fact, I've been thinking about a question for a while, but I still can't figure it out. ”

"What's the problem?"

"You build an embankment to fight the flood, but if the rain keeps falling and the dam is washed away, will the next flood be even more terrifying?"

Chu Junhan pursed his lips and frowned slightly, she really didn't think of the young man's question some time ago, and she didn't have time to think about it.

"So, I came up with a solution, but some details still need to be carefully considered." Wei Ziyuan took her hand and touched the calluses on her hands distressedly, what a pair of slender jade hands, which should have been protected by him, but now these slender jade hands have supported the lives of millions of Li people.

"What's the solution?" Chu Junhan's hand was held by the young man, his eyes full of anticipation.

"The story of Dayu's water control, presumably my daughter-in-law knows better than me, I am not fine, the flood diversion canal is stronger than the embankment, but this is indeed a big project, now the flood is overflowing, and the flood control is urgent. I wonder if there's a way to do it as well as digging a canal. Wei Ziyuan explained carefully.

Chu Junhan tilted his head and listened seriously.

The young man in white let go of her hand, stood up, walked to the simple desk, gently lifted his sleeve, and took a brush, "Daughter-in-law, help me sharpen the ink." ”

Chu Junhan responded, walked to the young man's side, gently picked up the inkstone, and grinded it seriously.

The soldiers passing by the commander's barracks, when they glanced at the two figures, their eyes were full of envy, as the saying goes, only envy the mandarin duck and not the immortal, the love in the eyes of the two is envious of others.

"Daughter-in-law, look," Wei Ziyuan lightly tapped his pen on it, there was a pattern like a waterwheel on it, but there were more things than the waterwheel, "The waterwheel we went to was driven by the flow rate of the water, but the flood was too rapid, and it was easy to destroy the waterwheel, so these, I was wondering what kind of waterwheel could avoid such a problem." ”

"What is this?" Chu Junhan pointed to the bottom of the waterwheel, where it looked like a boat and not a boat.

"This is a ship's bottom design modeled on the tumbler principle, but whether the specifics are credible or not, and we have to put it into use before we can reach a conclusion."

Chu Junhan suddenly realized, "The traditional waterwheel is fixed on the bank of the river, and the design of your bottom can float on the river?" ”

"Not bad."

"But what's the use of that?"

Wei Ziyuan smiled, "Daughter-in-law, what do you think, if we put a waterwheel of such a structure on the shore, what will happen if the flood is too violent?" ”

"Floating?" Chu Junhan couldn't believe what effect letting the waterwheel float in the flood could do.

"It's true that it can float, and if it floats and can continue to work, isn't it perfect?" Wei Ziyuan raised his eyebrows slightly.

The principle of the waterwheel is to use the impact of water, but if you let it float, isn't it like an embroidered pillow that is useless?

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