Fuwa is not easy to mess with when she is three years old

Du Yiguo's embrace was very warm, Du'an Lu lay on him, the front was warm, but the back felt the cool breeze.

I don't know why it's cold now...

She looked over her brother's shoulder to look at the little frog, who lowered his head, not knowing what to think.

Duan Lu thought about the small muddy courtyard, and when He Lai mentioned letting the villagers take refuge, He Lai agreed happily, and his heart suddenly brightened.

She stretched her neck vigorously, shouting to the little frog following Du Yiguo.

"His brother."

Little Frog: "Huh?"

Duan Lu didn't make a sound, but called him in the little frog's mind: "Your brother is an open-minded person, so it's not like he won't come back to pick you up during the Mid-Autumn Festival, right?"

Little Frog was all about his master's business, so he was a little confused when he was asked this question.

Duan Lu said in his mind: "You can stay at my house. After the Mid-Autumn Festival, if He Lai still doesn't come back... let's go to him, okay? The world is far and wide, and the world is far and wide, even if you walk with your feet , and there is always a time to go.”

"It's just a toad, can it still fly into the sky?"

The little frog looked up at Shangxian's round, pink and tender face, and nodded emphatically.

……

Once people are busy, the days pass quickly.

Xiaowa used the name of Master Jin Chan to hand over 200 taels of gold to Mr. Wu, and Master Xiao Tang would be the accountant. Well arranged.

As one of the young men of the Du family, Du Ertai participated in the urgently established "teaching school" in the village.I am a quick learner. In one day, I have already learned to lay sand and gravel and pile blue stones with the old masters in the village.

The next day, the stone was still on the road, and the young men of the village were still in the yard of Wu's house studying how to fix the gaps in the blue stone and how to make the water in the canal seep as little as possible.

But Du Ertai didn't come until noon, holding a gray stone slab in his hand, and appeared in front of everyone sweating.

The old mud master who teaches newcomers is surnamed Sun. He has wiped the houses of rich and noble families for decades in the city.

The craftsmanship that had to be paid to spread to the outside world is now the old man who came to ask for it at home, and the construction of the canal can save his family a lot of energy, so he came to the yard of old man Wu, bringing a group of people who don't know anything. The farmer began to study and caulk with mud.

Old man Sun looked at the sweaty black boy in front of him, and was very dissatisfied with this young man.

In front of everyone, he hit Du Ertai's leg with a copper cigarette pot and scolded in a loud voice.

"If you learn fast, can you be late? Huh? They are all like you. By tomorrow, we don't have to do anything in the village. Everyone will run to play, and let the stones have long legs to become water channels. The sand and gravel are also You can become glue yourself, you can glue all the stones together."

Several men around laughed, "Ertai hurried to learn, the master has rich experience, the formula he gave, the sand and gravel materials are mixed, and the canal of a kilometer will lose four of the ten water. Sixty percent of the water can be left in the fields. Well, that's fine workmanship."

"You can't learn to paint with a lot of money on weekdays. Why does the Du family boy want to steal and play tricks?"

That Du Ertai's face was full of red light, he smiled happily, his black face showed white teeth, and he was very happy.

He said to Master Sun.

"Master, my sister discovered a new powder that can really turn mud into glue."

"We tried it at home in the morning. We mixed the powder found by my family An Lu with water to make a thin mud, and smoothed it on the cracks in the stone slabs. After it dries, it will not dissolve in water, nor will it break apart with a hammer. .It's hard, like a stone growing out of a crack in the stone."

Seeing Du Ertai's whimsical look, the people around burst into laughter instantly.

The man from the Niu family has a broken tooth, and he can't speak easily.

"Stones grow out of the cracks in the stones, and lying is all upside down. Fortunately, you are still a boy, and you are full of horses and carriages."

But Du Ertai was not annoyed at all.

There is no basis for saying it, but yesterday my younger sister Duan Lu suddenly called his family to go to the north side of the yard to see it.It used to be a small piece of vegetable garden at home, but it suddenly turned into a piece of gray flat land yesterday for some reason.

The carrots are gone, and the cabbage is gone.

Obviously it was only watered yesterday, and it was still fine at that time, but now it has changed!

The brothers of the Du family thought they had been thieves, and clamored to tell the master of the Wu family to catch the man who stole things from other people's fields.

Unexpectedly, my younger sister, Duan Lu, ran over suddenly, fell down again, and when she got up again, she had a big bump on her head.

Everyone went up to coax them, but the Duane deer dug out a large gray stone carrot from under the soft ash...

Duan Lu yelled, "Grey ground, wet with water, turn into a carrot!"

He Lai's younger brother, the little bald man known as Master Jin Chan, also jumped out suddenly, telling everyone that the ash that suddenly appeared... If it lives into mud and then dries out, it will become a hard stone.

Yesterday, maybe the water entered the pit where the radish was just pulled out, and then entered the ash, so it condensed into the shape of the radish.

As blessed as his soul is, Du Ertai suddenly thought of the problem of caulking the canal, and conducted an experiment by accident, turning the mud into mud according to the proportion of the little bald head, and smoothing it into a piece.

Today, Du Ertai was not in a hurry to come to Mr. Wu's courtyard, waiting for the sun to shine... The gray mud that was still soft and trampled yesterday has really become a hard slate.

Everyone in the Du family stepped on the palm-thick piece, and the hard piece...wasn't damaged at all.

Du Ertai thought that if this thing could be used in the construction of canals, it might be able to solve big problems.So he rushed to Wu's house in a hurry and handed over the slate to everyone to see.

At this moment, as soon as the man from the Niu family got the slate, he felt a difference.The slate feels rougher than normal stones and slightly lighter, and it doesn't look like it was quarried from the mountain.

He knocked on it with his hands, but couldn't tell what kind of stone it was, so he handed the stone slab to Master Sun.

As soon as Master Sun took it, he said "Huh?"

Rubbing with one hand, digging, and sniffing under his nose, Mr. Sun almost lost his grip on the pipe and pot, and asked Du Ertai in a trembling voice.

"Boy Du, you said this came from the open space to the north of your house? This is..."

As he said that, the old man Sun was so excited that his nose almost flowed out.

"It seems that it can only be used in the palace. We are ordinary people who have heard of useless stone-making mud!"

Du Ertai waved his hands quickly.

"It's true that it came out of the open space. Yesterday, my brother and I dug a meter on the ground without digging to the bottom. Today, the hole has leveled itself out again, which is amazing. We have never seen the palace, but the dust on the ground , seems to be endless. But my sister has already given the name, it’s not called making stone mud.”

"An Lu said that it can be used with water, which is very convenient. Let's call him cement."