A genius? I just love studying.

Chapter 56 Why are you yelling so loudly? (Please read it later)

"?"

Chen Hui stood up, still a little confused, not knowing what had happened.

After more than ten seconds, Deng Jiqing decided to let this math genius go. "Okay, if you can't do it, sit down."

Chen Hui hadn't heard anything about what he had just explained, so naturally, there was no way he could do this question. He just wanted to remind Chen Hui that even if he won first place in the provincial math competition, he still needed to attend geography classes.

"I know that many students will choose science in their second year of high school. Geography is not included in the college entrance examination, but learning geography is not just for the college entrance examination. It also has many uses in life, so everyone..."

The students in Class 7 looked at Chen Hui and smiled.

After the provincial competition, they no longer had any doubts about Chen Hui's mathematical ability, but seeing such a genius suffer a setback still made people feel inexplicably happy.

For example, Li Hai was laughing very happily at this moment. If he was not in class, he would have burst into laughter.

Of course, some people think that Teacher Deng is a bit stingy. He clearly knows that Mr. Chen is good at mathematics, but he still wants him to answer such a difficult geography question. Isn't this deliberately making things difficult for Mr. Chen?

Nicole thought indignantly.

"Choose D!" Chen Hui suddenly said.

"what?"

Deng Jiqing was a little slow to react for a moment.

The students were even more confused. They were busy eating melons and didn't analyze the question at all. They didn't know whether the answer Chen Hui said was correct or not.

Only Liang Peixuan opened his mouth slightly, feeling that it was a little outrageous.

"For this question, choose D. The residential complex in the picture is most likely located in Haikou."

Chen Hui added.

Deng Jiqing opened his mouth slightly and fell silent.

Obviously, Chen Hui's answer is correct.

The students also realized this problem, and suddenly, Class 7 fell silent.

"Very good, Chen Hui's answer is correct!"

Deng Jiqing still didn't believe Chen Hui could really solve this problem, and probably just got lucky. "Tell us your thinking behind this problem."

Chen Hui has always respected his teachers. Although he often studied mathematics in other classes, he would never object to his teacher's requests.

As the title suggests, the two solstices refer to the winter solstice and the summer solstice. 8:00 and 16:00 can be understood as morning and afternoon, four time points corresponding to the four shadows in Figure 2.

From the four options, we can tell that this place is in China. On the winter solstice, no matter where you are in China, the sun rises in the southeast and sets in the southwest, with the sun at noon being due south. Therefore, at 8:00, the sun must be in the southeast, and at 16:00, the sun must be in the southwest. Therefore, the two shadows above are naturally the shadows of the morning and afternoon of the winter solstice.

On the summer solstice in China, the sun rises in the northeast and sets in the northwest. There are two situations for the sun at noon. Because the sun's direct point on the summer solstice is on the Tropic of Cancer, options ABC are all north of the Tropic of Cancer, so the sun is due south at noon. Option D, Haikou, is south of the Tropic of Cancer, so the sun is due north at noon.

But we can confirm that the two images at the bottom of Figure 2, from left to right, are the shadows of the morning and afternoon of the summer solstice respectively."

Chen Hui's loud voice echoed in the classroom. He had already passed level 2 in geography, and possessed level 3 insight, level 2 memory, and judgment close to level 2. For him, solving this kind of question was as easy as eating and drinking water. There was no difficulty at all.

"As the title suggests, we use the Beijing time zone, East 8, which is 120 degrees east longitude.

The length of a shadow during the day is symmetrical with 12 o'clock local time, so if it is in Beijing, the length of the shadow at 8 am and 4 pm should be the same. The length of the shadow in Figure 2 is obviously different, so option A is ruled out. This place is definitely not in Beijing.

Option C is also excluded because Hangzhou is also located at 120 degrees east longitude.

B and D are located just north and south of the Tropic of Cancer. They are both approximately at 110 degrees east longitude, one hour later than Beijing time. The sunrise time on the summer solstice is about 6 o'clock, so when it is 8 o'clock Beijing time, it is about 7 o'clock local time. According to Figure 2, the sunrise is in the northeast, no problem.

But the shadow in the afternoon in Figure 2 is in the southeast, so the sun must be in the opposite direction of the shadow, that is, in the northwest.

Because Yinchuan is located north of the Tropic of Cancer, the sun is due south at noon. If the time on the summer solstice is around 18:00, then at 15:00 local time, it is exactly between 12 and 18:00. The sun should be between due south and northwest. The deviation from due south cannot be greater than 90 degrees, so the sun should be in the southwest at this time, which contradicts the shadow in Figure 2.

So the answer to this question should be D. The location of the community in Figure 1 should be in Haikou!

Silence, deathly silence. The students in Class 7 looked at Chen Hui as if he were a monster.

99% of them choose science, so they don’t study geography seriously. In addition, Class 7 is not a top class, so the number of people in the class who can solve this problem can be counted on one hand.

From Chen Hui’s lengthy description, we can see that the difficulty of this question can be imagined.

In other words, this guy who just won the first prize in the provincial mathematics competition is also so strong in geography?

Was he always pretending before?

Pretend to be a pig and eat the tiger?

"grass!"

Li Hai exclaimed in a low voice. He could accept that Chen Hui was talented in mathematics, but who would have known that in just over two months, this guy not only won the first prize in the provincial mathematics competition, but also significantly improved his level in other subjects.

He saw that Chen Hui was starting to learn other subjects, but this was too outrageous!

Can you know everything just by listening in class?
It’s only been two months!

Liang Peixuan also looked back with a complicated expression.

Originally, he thought that it was nothing that Chen Hui was good at math, as he also had advantages in other subjects. But now it seems that a glimpse of the whole picture reveals the whole picture.

Chen Hui seemed to be getting further and further away from him!
"Okay, sit down."

Deng Jiqing was an adult after all, and he quickly controlled his agitated emotions.

This question is not too difficult, but in order to answer it correctly, you need to fully grasp the basic knowledge he explained. It tests your comprehensive application of knowledge, and the difficulty is not low.

Chen Hui was able to do it correctly, which clearly showed that he had learned it very well.

But when he saw Chen Hui sitting down and continuing to study mathematics, he couldn't help but jump in his forehead.

However, he quickly suppressed his little emotion. Everyone had learned it and was doing other things in class, so he didn't seem to say much.

Calming down his mood, Deng Jiqing moved the mouse and turned to the next page, which was another question.

Chen Hui has already explained the previous question very clearly, so he doesn't need to explain further.

"Well, Li Hai, please answer this question. I saw you were smiling happily just now, so I guess you have already understood it."

"?"

Li Hai's body stiffened, and he stood up reluctantly. He poked Chen Hui next to him and looked at him with a look for help.

"I still like your unruly look!"

Chen Hui smiled slightly, whispered something, and continued to study. He had seen Li Hai's gloating laughter just now.

Deng Jiqing also added at the right time, "Look at the question, look at what Chen Hui is doing?"

Hahaha……

The class suddenly burst into laughter.

But Li Hai was not a shy person. He said loudly without blushing or beating his heart, "Teacher Deng, I don't know how to do it."

"..."

Deng Jiqing, "Why are you yelling so loudly if you can't do it?"

"Sit down."

He turned around and looked at a female classmate, "Ni Keke, can you do this problem?"

(End of this chapter)