A large class with two small sections of forty-five minutes each.

Li Changqing has finished a lecture, and now it's time for recess.

The students were amazed by what Li Changqing talked about in class, depicting the beauty of mathematics from a very magical field, and he spoke very reasonably, convincingly.

Tian Guangwen and Ding Shaoyuan have studied mathematics all their lives, and they only discovered that mathematics actually has such a side!

The break was very short, and the students basically stayed in their places to digest what Li Changqing said, and even after class, the class seemed very quiet.

"Teacher Li, when you talked about mathematics and Zhou Yi just now, you talked about yin and yang, and now there are also many fortune-telling sticks in stalls, can Mr. Li calculate what I have for breakfast today?"

Suddenly, a student sitting in the last row wearing a black sweatshirt thought of something very curious, so he asked Li Changqing loudly, which was particularly abrupt in the entire classroom, and instantly attracted the attention of most people.

Ding Shaoyuan was worried that Li Changqing would mistakenly think that the student was scolding him, so he frowned and looked back, then observed Li Changqing's face, and was a little relieved to see that Li Changqing was nothing.

Although the students present were unhappy that the boy in the black sweatshirt interrupted their thoughts, they were all looking forward to how Li Changqing would answer.

Li Changqing's understanding of the Book of Changes is more from the perspective of Confucianism, from the perspective of governing the country and cultivating the family.

In the profession of the Yin and Yang family, Li Changqing knows Feng Shui, Mai Xiangfu, and the Five Elements Great Array, and there is no inheritance of Yi Shu in the Book of Changes.

For anyone else, Li Changqing couldn't answer, and probably pretended to be cold and disdainful to answer, but as for what the student asked about what he ate in the morning, Li Changqing really knew that this was not the classmate who saw the long queue to buy a baked cake and finally fell to the ground when he drove past the school gate in the morning?

"What's your name?"

Li Changqing remembered that he picked up the baked cake that had fallen on the ground and put it in his mouth, which probably most people would not do now, so he was quite interested, and did not answer his question, but asked the student's name with interest.

"Eh, Yuan Tiantian ......", Yuan Tiantian was also stunned, wasn't he asking Li Changqing a question?

"Half like the sun and half like the moon, once fell in the dirt!"

Li Changqing nodded, a wicked interest emerged in his heart, and he recited a poem in a magnetic voice.

"In the first half of "Song of Baked Cakes", Mr. Li is talking about the baked cakes you ate, and the second half of the sentence is saying that your baked cakes fell on the soil!"

"Talent, is Mr. Li right?"

Many students have played a game called Hero Killing, and they are very familiar with Liu Bowen's lines in it, and several students sitting next to Yuan Tiantian immediately confirmed with Yuan Tiantian.

"Could it be that Mr. Li saw himself at that time? Impossible, there are more than 20,000 students in the entire Wen'an College, and there are thousands of students in the School of Mathematics, and he has only taken one math class, the probability of Mr. Li meeting himself at the right time is too low, it should be impossible! Is it really calculated?"

As soon as Li Changqing finished reading, Yuan Tiantian was stunned, and when he heard his classmates pulling his sleeves, he said in a daze: "Completely correct, ......."

"Why can Mr. Li's mathematics be related to Zhou Yi, Yin and Yang, and Confucianism, and can also be clever? Could it be that I have studied fake mathematics for decades?"

Tian Guangwen didn't sleep well last night, he fell asleep after a bump in the car, and didn't wake up until Li Changqing parked the car, and didn't see the scene of Yuan Tiantian picking up baked cakes, and he was surprised that Li Changqing could really calculate the breakfast that Yuan Tiantian ate!

"This is amazing, I'm going to have to kneel in class in the future!"

"At the opening ceremony, I was fascinated by the speech of 'No Questions Asked', and I felt that my body and mind were sublimated, and I witnessed the new optimization method of Fermat's theorem in the last class, and this class directly staged the divine algorithm!"

"With Teacher Li here, who dares to say that Wen'an College is a third-rate college in the future, I will be anxious with him, don't you see that the director of the mathematics department of Mizuki University has heard straight ears?"

"Bell bell ......", the short break was over, and Li Changqing was ready to start teaching again.

Tian Guangwen suddenly came back to his senses from the shock of the first half of the class, remembered the fundamental task of listening to the lecture, and recalled the scene when Li Changqing was lecturing in Lijiaao, worried that he would be fascinated by listening again, and when the class ended, Li Changqing disappeared and stood up directly.

Li Changqing looked at Tian Guangwen calmly, without speaking or moving.

"Mr. Li, I have a set of data that I don't understand too much about the relationship between them, can you help me solve it?"

Tian Guangwen was very worried, if Li Changqing refused him again, he would really have to go back to Yanjing.

"Hmm!", teacher, preaching and receiving karma to solve doubts, since Li Changqing has the obligation to answer other people's questions in class, Tian Guangwen's questions did not go beyond the scope of the class, so he nodded and agreed.

"The data is like this, Mr. Li, you see ......"

Tian Guangwen was overjoyed, walked to the blackboard, and used a relatively advanced algorithm to encrypt and write the data given by the Institute of Physics on the blackboard, if it weren't for the people who were proficient in number theory, they couldn't understand what he wrote at all, a total of four blackboards, Tian Guangwen's writing speed was extremely fast, and he was soon filled with all kinds of numbers and symbols.

"Teacher Li, do you understand?"

Tian Guangwen turned his head to Li Changqing and asked, his heart was extremely nervous, if Li Changqing couldn't understand what he wrote, even if Li Changqing agreed to help him, it would be impossible to find out the internal connection between that set of data, then all the efforts he made were just a joke.

"Understood!", Li Changqing understood at a glance the encrypted data that Tian Guangwen wrote on the blackboard, and faintly felt a little familiar.

"Great! Also, you can read it, if you understand, just nod your head, and I'll continue writing!"

Tian Guangwen was excited, Li Changqing was able to understand the data encrypted by his number theory algorithm in such a short period of time, which shows Li Changqing's skills in the field of number theory, so the possibility that Li Changqing can help him find the internal connection between that set of data has greatly increased!

"Okay!", Li Changqing felt a little interesting.

Tian Guangwen wiped the four blackboards clean, continued to write on the blackboard, and asked Li Changqing with his eyes after writing, and Li Changqing nodded.

"Squeak ......"

The only thing left in the whole classroom was the sound of chalk rubbing on the blackboard in Tian Guangwen's hand, the content on the blackboard was like a book from heaven to the students present, they couldn't understand it at all, but there was a magical magic that attracted them, and they watched and admired it quietly.