Rebirth 1984 Wife and children are on the hot bed

The sky is blue and the clouds are white. It is really a rare good weather.

Xu Dahai and Xiao Tingzi squatted in the back garden, looking at ginseng seedlings, flowers, and various plants in the garden.

Just chatting.

The childlike words made Xu Dahai feel very relaxed and at ease.

"We have a lot of chicks at home now. They like to eat flies. When I kill a fly, they come over and grab it." The little girl said.

"Of course chickens love to eat bugs, and flies are bugs too."

Xu Dahai said with a smile: "Swat flies and don't stay under the sun for too long.

Be careful when your heart is so hot that you are sweating, and if you let the cold wind blow, you will catch a cold. "

"Yeah, yeah, I know..." The little girl looked at the ginseng seedling again and asked, "Dad, how old do you think this ginseng tree is? Has it become a sperm yet?"

The watermelon seedlings, melon seedlings, mushroom seedlings, and other blueberries, tomatoes, cucumbers, peppers, eggplants, beans, etc. all grown in the back garden.

Besides.

There are also many "undead" plants planted in the corners, that is, purslane grandiflora.

About 20 centimeters high, red, pink, yellow... all kinds of colorful petals are very beautiful.

To the east is the Great Shuji, which can grow nearly two meters high.

Also called hollyhock, it is one foot red, but here in Xujiatun, it is called "Shu straw flower" - the large flowers are red, white, and pink, and they are also quite beautiful.

Sun Guangcai brought the flower seeds back from Liao Province, where the temperature is relatively higher and the flower seeds can survive the winter in the soil.

As for Xujiatun - the best thing is to store the flower seeds and continue planting them next spring.

Sudden.

Wang Xiuxiu’s voice came from behind:

"Are you two squatting here? Let's go, let's go eat!"

"Is the meal ready?"

"Yeah, steamed meat buns." Wang Xiuxiu was still wearing an apron, and her hair on her temples was wet from cooking.

"Okay, let's go eat."

It turned out that several pots of meat buns were steamed and most of the buns were brought over for the construction workers to eat.

The big meat buns are very fragrant - mainly for Wang Renqing. Since he doesn't want to be special, let all construction workers eat meat buns.

After finishing the meal, we rested for a while.

in the afternoon.

Xu Dahai dug two cherry trees from the back garden of Lin's house in Rongcheng and transplanted them in his front yard.

"The cherry tree is easy to survive. Just pour some water and don't need to worry about it."

Rong Chenglin rolled up his trouser legs and carried a shovel to help dig holes and plant cherry trees:

"These two trees are a bit small. There are some larger ones on the west side of my yard. I should dig two more from that side."

"Just these two trees will do. They will grow up slowly."

Xu Dahai responded with a smile. He didn't want his big cherry tree. The bigger the tree, the harder it was to dig and the more favors he owed.

Just two medium-sized ones will do.

After planting the two cherry trees and watering them, Rong Chenglin talked about collecting toads again.

In the past few days, he and Xu Yeliang rode on the [-]-meter pole every day with sacks in the basket to buy toads.

It's really tiring, but you can also make some money.

He is also resting today.

"By the way, let me tell you something. Peel the toad, add onions, ginger, and garlic, cut the potatoes into pieces, and stew it in a pot! Ah~ the smell is really amazing!"

Rong Chenglin smiled and said: "If we have a chance another day, we must have a good meal."

"Okay, I still have two bottles of good wine here, let's drink some together then."

After the water seeped down, I poured two more buckets of water around the cherry tree to irrigate the land thoroughly.

After chatting for a few more words, Rong Chenglin went home.

Xu Dahai was just about to pick a few cucumbers to dip into the sauce, when suddenly, his second sister Xu Mei came from the south.

"Little Four!"

"Second sister? Are you back from the countryside?"

The second sister, Xu Mei, has been living at the school in the village recently and has not seen her for several days.

Seeing the second sister smiling, Xu Dahai said with a smile: "Is there anything good you can do? Second sister, you seem to be very happy."

"It's not a good thing. It's just that I found that living on campus makes learning more efficient. I've learned a lot recently..."

The second sister Xu Mei is very happy and feels more confident about taking the adult college entrance examination this year.

Xu Dahai was also happy.

After chatting for a few more words, the two returned to their mother's courtyard together.

Xiaoxiang is the daughter of the second sister Xu Mei. She hasn't seen her mother for several days. She keeps staying next to Xu Mei, holding her arm and not letting go.

The second sister Xu Mei's eyes were full of heartache and slightly tearful, and she gently stroked Xiaoxiang's hair.

"Mom, what's for dinner?" Xu Dahai shouted.

"Let's stew a fish. There is another fish in the water urn in the yard." My mother poked her head in from the outhouse and said with a smile.

The second girl is back and she is also very happy.

After dinner, the second sister Xu Mei took out books from a gray rag pocket. The books were wrapped in newspapers and well protected.

"Xiaosi, I don't know a few questions. Are you free? Can you help me look at them!?"

"I'm free at any time. What questions are there? Let me take a look."

The adult college entrance examination only tests high school knowledge, which is much more difficult than junior high school knowledge.

Especially in mathematics, there are many symbols and calculation methods that are simply incomprehensible.

"Look at this question..."

"Well... this problem can be solved using mathematical induction." Xu Dahai took the pen and the gray-yellow paper and said while writing:

“First verify that the proposition is correct when n is equal to 1.

Then assume that n is equal to k, and the proposition is correct when k is greater than or equal to 1.

When we prove that n is equal to k+1, the proposition is also correct. See, do you understand anything? "

"Why is this problem-solving method so weird? Hiss~ the more you look at it, the more awkward it becomes. It is not a step-by-step deduction." Second sister Xu Mei frowned and said:

"The more I look at it, the more uncomfortable I feel. Why is there such a way to solve the problem?"

Wang Xiuxiu also came over curiously to take a look.

Ok.

can't read.

Xu Dahai smiled instantly and patiently explained: "Mathematical induction is a very important method.

Many mathematical problems would be very complicated or even impossible to solve using other methods, but they are very simple using mathematical induction. "

The second sister Xu Mei nodded slightly.

Xu Dahai continued to smile:

“Just like when we do farm work, we have all kinds of farm tools.

Use a shovel to dig the soil, a sickle to mow the grass, a rake to rake the grass, and a columbine to sow...

The same is true for mathematics. Different problem-solving methods are equivalent to different farm tools.

You still need to study mathematical induction seriously, sometimes it will be very useful. "

"I understood when you said that." The second sister Xu Mei smiled instantly and began to study mathematical induction seriously.

She was very resistant before, but now she is beginning to try to accept mathematical induction.

Xu Dahai helped her sort out some knowledge points. It would be difficult for her to understand a lot of knowledge if she read it by herself.

But after Xu Dahai explained it to her and discussed it, she understood it thoroughly and mastered it almost immediately.