Zheng Qianhong's eyesight is excellent, although she doesn't know square words, but she can see the book Hengtian is reading at a glance, it is a math book, but the content of the book is obviously more profound than what Teacher Luo said.

Mr. Luo is talking about addition and subtraction within 100, but there is a quadratic equation in the book Hengtian reads, and according to the learning progress here, he will obviously not learn this book until the seventh grade or above.

"My favorite little brother is really different, hehe!" Zheng Qianhong smiled very happily, she had long forgotten the critical attack from Hengtian's little brother.

Zheng Dalong, who was sitting next to her, was dazzled by his sister's cute smiling face, and didn't pay attention to what Teacher Luo wrote on the blackboard.

Teacher Luo stood on the podium and naturally saw the small movements of the children in the audience clearly, originally he didn't plan to embarrass Zheng Dalong, but who asked him to bring his sister to class? Setting a bad example for preschoolers is absolutely unbearable!

"Ahem! Zheng Dalong, can you do the math of this application problem? His gentle eyes suddenly shone as sharp as an eagle.

"Oh, a set of children's clothes is 20 yuan, including 8 yuan for tops, may I ask, is the top expensive or the pants expensive?" Zheng Dalong was frightened, and instinctively stood up and began to read the question.

After reading the question, he subconsciously began to scratch his head, which is his habitual small action when he is nervous.

"20 minus 8 equals, eh, equals ......" His little chubby face turned red, but the more anxious he was, the more he couldn't figure it out.

Zheng Qianhong, who was sitting on the side, suddenly pulled his sleeves and whispered, "Pants are 12 yuan, which is more expensive than a blouse." ”

Although Zheng Dalong couldn't believe that the four-year-old girl could calculate the second-grade math problem, he still repeated it honestly, and answering the wrong question horizontally and vertically was just a few sentences, but because of his weak heart, his voice was not loud.

A...... By the way, sit down and pay more attention to the lectures in the future. Teacher Luo said depressedly, he obviously saw Zheng Dalong deserting, how could he answer the question correctly?

All the classmates felt that Zheng Dalong must have gone out of shit luck today, and such a question could happen to be answered correctly, only Tianheng snorted coldly in his heart, his hearing was extremely strong, and no one else heard the words of the little girl, but he heard it clearly.

It turns out that Zheng Dalong's sister turned out to be a prodigy? He remembered that he had already reached this level when he was more than four years old, and the reason why he was still in the second grade was just to avoid some danger.

For such a prodigy, he must stay away, in case she sees her hidden talent, he mentally put Zheng Qianhong in the tenth place in the blacklist he set up.

Zheng Qianhong didn't expect that just because she helped Zheng Dalong cheat once, she was blacklisted by her favorite little brother.

In the next class, the more Zheng Qianhong listened, the more bored she became, and the little brother Hengtian even owed her a look, and she couldn't help yawning.

After a while, she was already lying on the table and snoring, there was a suspicious liquid overflowing from the corners of her lips, and the well-behaved little girl looked even more pitiful, Zheng Dalong took out a soft napkin and carefully put it on the corner of her mouth, for fear of waking her up.

This is the first time in his life to take care of someone, this feeling is very fresh, and at the same time there is a small sense of accomplishment, it turns out that it is really a happy thing to have a sister.

No wonder those friends dislike his sister in their mouths, and at the same time save the delicious food for his sister to eat, he decided to leave all the snacks for his sister from now on.