Only Ning Yunxi nodded slightly while listening to the words of the two college students. This science theory is just a small case for Teacher Ning.

Meng Chenyi and Lin Shangxian took turns to finish the theory and concluded: "If my grandmother designed it was grinding with a relatively soft piece of iron, she would need to grind it manually for a hundred years without eating or drinking. "

One hundred years! Can grandma live for more than one hundred years? Several children show a deep worry on their faces. What did Teacher Ning asks for this question? Do you want to teach children to be patient? There is no need to talk about theoretical basis, right?

Therefore, the two brothers also circled Teacher Ning's questions over and over again and said with a lot of thought: "I just saw their answers. We thought, Teacher Ning meant that we should not grind each question with an iron rod into a needle, but should use rational and critical concepts to analyze the problem. Patience is certainly necessary, but critical thinking needs to be used more academically. Instead of grinding it manually, it has been invented in the history of human intelligence development that it is easy to grind into a needle without manual use of wire drawing and other techniques."

It is rare for two college students to learn to use philosophy instead of directly using formulas to analyze the question. Ning Yunxi nodded affirmatively to them. Therefore, the answer to this question was. After receiving a whisper from Uncle Er, Lei Lei opened his mouth and replied to his mother: "Iron pestle, needle, is the same, it is iron!"

By the way, this is the essence of this problem. Isn’t the reason why iron pestles can be ground into needles? Isn’t the raw materials the same? Otherwise, how can they be ground into needles?

"This is too brain-burning!" Meng Chenjun shouted loudly.

Meng Chenxi glared at his younger brother: If you can answer questions so easily, how can you study in depth?

Meng Chencheng then thought of the summer homework he got back from school today, and asked his brother and sister: "You have no homework done, right?"

Hehehe. Meng Chenjun smiled proudly at his sister: Your fourth brother has no summer homework in the middle school entrance examination, so he doesn’t have to do homework with you this summer vacation.

Humph. Meng Chencheng threw two small braids and hummed a song in his mouth: Why am I happy to do my homework? I'm so angry.

These two little ghosts who didn't quarrel all day long were strange, and the others were speechless when they looked at them.

The aunts, uncles and brothers helped them finish their homework, and Leilei happily patted his palms. The little kid finished his homework for the first time and felt a sense of accomplishment. So the kid was squirming and jumping on the ground and jumping for a few discos.

"Everyone is here to have dinner." Grandma Meng put the food on the table and called everyone in the house to have dinner.

Ning Yunxi thought of her husband. When she was asleep, was he going back to the army?

At this time, Leilei climbed onto his mother and muttered in front of his mother's ears.

Ning Yunxi held his son to the balcony while listening to his son's whispering. After hearing this, he looked at his son's little face in surprise: "Your father won't let you tell anyone?"

Leilei nipped his little head.

But why did you tell your mother? Ning Yunxi looked at her son's cute look and imagined the large shadow area deep in her husband's heart at this moment.

My son, a little spy, admitted that he was not a sin to tell his mother, and that his mother was different from others.
Chapter completed!