Yang Dacui ate sweet potatoes and potatoes once and liked them very much. He came to the fields almost every day.

Instead, croissants, tomatoes and peppers. Although she also takes care of it, she doesn't care because she doesn't see anything physical and doesn't know if it will produce results.

As the days passed, whenever it rained, windy, and thundered, Shen Yunxi was particularly worried that the wind would blow down the crops in the field.

It's raining heavily again today. Shen Yunxi sat at the entrance of the cave and looked at the pouring rain outside.

Her daughter Tian Xiuzhu ran over and snuggled up to Shen Yunxi. "Mother, aren't you happy?"

Shen Yunxi shook his head and smiled. "I'm not upset, but I'm worried that the storm will destroy our crops."

Zheng Guizhen looked out worriedly and said, "Alas, I hope God will open his eyes and not destroy our crops." That's the capital we keep here!"

Tian Xiuzhu also frowned when he heard this. She was still a child and had no choice.

Sadness is transmitted from adults to children, and everyone is unhappy.

Shen Yunxi saw that everyone was in a hurry, so he patted his forehead. "It's useless to worry, let it go. I happen to be free today, so I'm going to check the multiplication table you memorized. If you can memorize, I'll teach you addition and subtraction. ”

All the children knew the importance of learning and immediately began to recite the multiplication table for Shen Yunxi.

The children memorized very fluently. Even the youngest Tian Xiuzhu can recite them all.

The older Tian Xiuli and Tian Daniu, as well as Zheng Guizhen's two daughters, Tian Qiaoling and Tian Junling, can also recite fluently.

Shen Yunxi picked up a branch and wrote the Arabic numerals one, two, three, four, five, six, seven, eight, and nine on the sand table: "Come on, this is a simple counting method I learned from a foreigner in the northwest." It's one, two, it's simple, it's just a symbol. Write this number down and it can make up all the numbers you can say. ”

Tian Xiuzhu was stunned and hurriedly raised his hand. "Mother, how much is a hundred?"

Shen Yunxi wrote a 1 on the sand table, followed by two more zeros, "This is a hundred, composed of a hundred 1s, or ten tens." ”

"Is 59 a 5 plus a 9?" Tian Erniu asked directly. He seemed to see the doorway.

Shen Yunxi nodded: "Yes, this is fifty-nine."

"Two 9s equal 99?" Tian Xiuli asked. He was curious. I can count like this!

Shen Yunxi nodded: "Yes, Xiuli is amazing." Come on, practice first, memorize these numbers, and I'll teach you well. ”

"Hmm!" Everyone should write the numbers on the sandbox.

Not far away, Zheng Guizhen was surprised by the simplicity of this number. She learned, and was glad she would be able to count in the future.

Shen Yunxi smiled: "Today I will teach you addition and subtraction."

columns are vertical, and the calculation method is explained. No matter how big a number is, it calculates addition and subtraction quickly.

Zheng Guizhen was very happy to see that the children were learning quickly. When the rain stopped, she smiled and said, "Fourth brother and sister, what you teach is really simple. I've learned. ”

Shen Yunxi smiled: "It's studious!" Always useful in the future. We don't ask others to know that we can do arithmetic. We just want not to be deceived. will settle accounts, and we can use it in our future lives. ”

"Okay, you keep studying. I'm going to go out into the field and see if our crops are good. Zheng Guizhen smiled, put on a coat, put on a bamboo hat, and went out of the hole.