Five minutes and nine o'clock, the provincial team training sign-in was completed.

After Mr. Xie smoked the last cigarette in the corridor, he stepped into the classroom, didn't look at anyone all the way, walked to the blackboard with a sullen head, picked up the chalk and wrote three crooked characters-

Resolve the problem.

When you're done, throw down the chalk and point to the blackboard.

"See it clearly, the one in it, the strife, don't write it as Liu Jifen's Fen for me. ”

In the sparse laughter, Xie Qifen sat directly on the podium, and scolded a class of people as if chatting: "It's seven days in total, let's not waste time, this training camp, I have two ways here, time is limited, I can only choose one to go." So first of all, who wants to get closer to the truth of physics? Raise your hand. ”

This first sentence is stunned.

But three or five people still reacted and raised their hands high, including Qi Yingnan.

"Okay, I see. Xie Qifen then asked, "Whoever wants to improve their performance in the competition, raise their hand." ”

This time, seven or eight people raised their hands uncertainly, but Qi Yingnan's hand never let go.

"You didn't raise your hand twice, why are you here?" Xie Qifen shook his head and smiled bitterly, "Okay, okay, I know your choice is difficult, let's do it again-"

"If you want to get close to the truth of physics, I will take you to visit the real scientific research laboratory in the experimental training part, and you can get started if you have the opportunity, and I will tell you cutting-edge knowledge in the theoretical part. ”

"If you want to improve your performance in the competition, let's do the questions, the most important thing we do is the competition champion, they will tell you more than any teacher, I will help you pull it over one by one." ”

"Time and resources are limited, we can only take one of the two paths, and the minority obeys the majority. ”

"Now, if you want to get close to the truth of physics, please raise your hand, and if you want to improve your score, don't move. ”

After an explanation, there were only two people left who raised their hands, less than the first time.

A Qi Yingnan, and a junior auditor.

"Okay, I see. Xie Qifen didn't have any extra expression, jumped off the podium, and said to Lu Yang, "You organize, gather in the basic teaching laboratory at 9:30, and I'll go out to carry the champion of the physical competition experiment." ”

When he had finished speaking, he walked out of the classroom with his pocket in his pocket, and in the meantime he had already pulled out a cigarette and put it in his mouth.

Although the people in the class couldn't understand this teacher, if they could really invite the experimental champion to tutor, it would definitely be more effective than most university teachers for the competition.

Lu Yang was very innocent, the opening speech of the training camp was originally the matter of the vice president, but now he is pushing it around, and he can only let him come as an ordinary student.

Alas, there is no way, for the sake of Baoyan, let's go hard.

Lu Yang walked to the podium, sighed and said: "I'm sorry everyone, Mr. Xie has more personality, but he is actually my country's first IPhO champion, he was only 16 years old at the time, and the reason why he didn't get a full score was because his English was too poor and he didn't understand the questions." ”

Buzz rumble!

The class was amazed.

Is this thistle? Anyone who comes out is at this level?

A student couldn't wait to ask, "Since Teacher Xie became famous so early, there must be a lot of achievements now, right?"

"This ...... Scientific research is such a thing as a boil...... And there's an element of luck. Lu Yang said embarrassedly, "But please rest assured, Mr. Xie's understanding of the competition must be the best in the school, and it is not easy to invite him in this training camp." ”

After Lu Yang said these words, he suddenly felt like he had grown up.

To the whole class, I tell lies without even blinking my eyes, and I don't know that I am so mature?

Another student below asked, "Senior, should we call him Professor Xie when we see him?"

"This ...... He doesn't like the title of professor very much, let's call him teacher, in fact, it doesn't matter if he is called by his name, he doesn't mind. Lu Yang clapped his hands and said, "Okay, let's talk about a few points to pay attention to......

......

In the courtyard of the courtyard, Li Zheng sat alone on a stone bench, but he was not in a hurry to leave.

As the so-called big and far, they have come and gone, even if they only breathe physical air, it is excellent.

Thinking about the past, not to mention thistle, even the University of Science and Technology and the University of Science and Technology themselves don't dare to think about it, compared with people like Lin Yujing, they are in two worlds, and they can't even see each other.

And now, I am really sitting here, and I am only a stone's throw away from my grandest goal.

I don't know what kind of state it will be like when I actually go to university.

In the reverie, a smell of flue-cured tobacco wafted over.

Li Zheng frowned and turned his head, Xie Qifen just took out his cigarette, and sat next to Li Zheng with his pocket.

"Don't think about it, it's not interesting. Xie Qifeng patted Li Zheng on the shoulder, "I really like it, let's go abroad, IPhO is a good opportunity." ”

Li Zheng subconsciously moved to the side, considering that the other party was a teacher of Jida, it was not easy to refute it in person.

"Li Zheng, right. Xie Qifen pointed to the teaching building and said with a smile, "When you look up at it, you can only see the side that is exposed to you on it, and you will imagine that it is particularly sacred and beautiful. ”

Li Zheng stood up directly when he heard this: "If that's the case, why don't you go abroad, Mr. Xie?"

"I don't speak English well. Xie Qi nodded with his troubles, "It's the most annoying English." ”

“......”

"Haha, okay, what do you like, don't nag. Xie Qifen also got up and walked out, walked seven or eight steps and suddenly turned back and said, "Learning mathematics well, how good you can learn, not only in competitions, but also in the future." ”

"Hmm......" Li Zheng nodded suspiciously.

That's a pretty simple point.

......

Leaving the courtyard, when Li Zheng was about to leave, he happened to pass by the breakfast stall that he used to frequented during the previous training camp of the chemistry provincial team, thinking that his tofu brain was quite delicious, so he walked over and asked for a bowl.

When the stall owner saw that Li Zheng's face was familiar, he filled the tofu brain with some and sprinkled some more coriander.

was about to hand it to Li Zheng, Li Zheng suddenly raised his hand and said, "Another 23 spoons of marinade, thank you." ”

"Oh?" the stall owner refilled more than half a spoonful for Li Zheng, and chuckled, "Young man, aren't you afraid of salty?"

"Not salty. Li Zheng confidently took the bowl, "You gave a lot of tofu and coriander today, and if you don't add a little marinade, it won't taste enough." ”

Only then did the stall owner notice that the amount of seasoning had formed a habit, and he had given more tofu to others, but he forgot to add the corresponding marinade.

Such a miscalculation should not have appeared at the old breakfast stall.

On the one hand, the stall owner was quite ashamed, and on the other hand, he looked at Li Zheng again and couldn't help but be in awe.

Unexpectedly, this familiar young man, at a young age, is already an old tofu brain eater.

As the stall closes, there are no customers, so the stall owner looks at the young old diner with interest.

Li Zheng's side, holding the tofu brain, sat down, ordered a little chili oil, picked up the spoon, and slowly pulled out a whole area that was half spicy and half not spicy.

The stall owner looked at the spoonful of tofu brain and couldn't help but nod his head in convincing.

Here, the level of eating tofu brain is shown.

On the one hand, if you want the flavor to be even, you need to stir it properly.

However, once stirred, it will destroy the overall feeling of the tofu, and the whole smooth tofu brain will become fragmented and tasteless.

And the real old diners, a spoonful down, must be a whole piece of tofu, plus just the right amount of marinade and chili oil.

Sure enough, I didn't see the wrong person.

After Li Zheng comfortably ate a spoonful, he pursed his lips beautifully, then looked at it a little, and steadily took out the next spoonful.

After eating three or five spoonfuls like this, the stall owner already showed a full smile.

Hmph, this kid's attainments are even more profound than imagined.

It is important to know that each spoonful of tofu brain is particular, and the seasoning should be evenly distributed.

At the end of the day, if only white tofu remains, it will have no taste.

If there is only seasoning left, then the previous experience is not extreme.

To put it simply, it doesn't take more than ten years of hard work, and I can't imagine that every spoonful is evenly distributed.

Otherwise, it's a math problem.

Let the total amount of tofu brain be X cubic centimeters, and it takes Y spoons to eat, and the size of each spoon is similar.

Set the total amount of seasoning to Z ml.

Then, each scoop corresponds to XY cubic centimeters of tofu brain, and ZY milliliters of seasoning.

Add to that the uncertainty of coriander and chili oil.

In order to achieve perfect distribution, it is necessary to introduce calculus and limits.

But even if the calculation is perfect, it still has to face the inaccuracy of human visual inspection and the instability of human hands.

It can be said that the perfect tofu eating brain, just like European-style geometry, only exists in abstract theories and cannot be truly realized.

But that doesn't stop humanity from striving for perfection.

For example, the length of 1 centimeter is abstract, although it cannot be achieved exactly, but human beings can continue to improve the accuracy and get closer and closer to the limit of this accuracy.

At this time, Li Zheng is the challenger of this limit.

Every spoonful of his, in the eyes of the stall owner, is so flawless.

In the blink of an eye, half a bowl of tofu brain was eaten, and the stall owner looked at the situation in the bowl and was already glaring.

The size of the tofu brain has been reduced by just half.

The thickness of the seasoning has also been reduced by just half.

Perfect...... It's perfect......

Just as she was amazed, a round-faced girl with glasses walked up to the stall and looked at the steamed bun cages piled high on the steamer.

"Soup dumplings, the bottom drawer, thank you. ”

The stall owner only listened to the voice, and knew who it was, shook his head with a smile, and pulled out the cage of steamed buns she designated: "Freshly steamed, don't worry, another bowl of soy milk?"

"Hah, you remember. The girl took the bun with a smile and transported it to the table behind Li Zheng.

The stall owner served a cup of soy milk and was also full of admiration for this girl.

If that young man is an old tofu brain, then this girl is an old soup dumpling.

The knowledge of filling soup dumplings is no less than that of tofu brain.

The easiest one - be sure to eat the freshly steamed.

If it is a bun that has been cooked for a long time and is placed on it to keep warm, after a long time, the bun skin is likely to stick with the cage drawer, and it will break when it is clamped.

For soup dumplings, breaking them is a devastating experience, no less destructive than filling in the answer sheets with a ballpoint pen during the exam.

Therefore, savvy old soup dumpling diners must observe the cook's cage arrangement in advance, lock the latest steamed bun, and cut off the beard when it is just steamed.

The round-faced girl paid the money, took the soy milk, and reached the seat behind Li Zheng, took out her chopsticks with a little anxiety, sandwiched the mouth of the soup bag on the edge, and shook it slightly.

The corners of the stall owner's mouth lifted slightly.

It's not panic, it's the pursuit of extreme savoring time.

As for this shaking, first, it is to loosen the part of the bottom of the soup dumpling sticking to the cage drawer a little, so as to reduce the "breaking rate" when the bun is clamped for a while.

Second, it is also to mix the fat and meat filling in the soup bag evenly, so as not to make the soup too greasy.

Sure enough, after the girl shook a few times, she lifted the head of the bun steadily, and picked up the whole soup dumpling without missing a drop.

Here's the most critical step.

The round-faced girl took the soup bag, did not rush to eat, but put it in the spoon, poked a small hole lightly, then picked up the bun, let the soup flow to fill a spoonful, and then brought the spoon to her mouth, blew it gently, and finally pursed her mouth and sucked it clean.

"Huh......" The girl showed a satisfied expression, and after tasting enough soup, she stuffed the rest of the bun into her mouth.

That's it, the core of soup dumplings is soup, not buns.

If you chew it in one mouthful, the subject and verb are reversed, and the essence of the soup dumpling is lost.

However, this way of eating "pouring soup into a spoon" is not the most perfect.

Is it because of that?

The stall owner watched suspiciously as the round-faced girl picked up the seventh bun.

This time, instead of putting it in the spoon, she tilted her head and put it in her mouth.

Here it comes!

I saw that the girl bit lightly, and after biting a gap in the skin, she only "sucked" and sucked the delicious soup clean.

This is the perfect way to eat.

The girl apparently knew.

I didn't eat it like this before, but because it was too hot, I needed to pour it into a spoon and blow it.

However, if you wait for it to cool down naturally, there is a risk that the soup bag will stick to the bottom of the cage and break the bag.

The seventh one starts to suck, which is basically the best solution.

Looking at the things of the past hundred years, there are successors on the campus of Jida University, and the stall owner smiled with relief and cleaned up the stall.

Some traditions have long been overturned.

Some inheritances have just begun.

Seeing the stall owner closing the stall, the man and the woman also sped up the pace of eating breakfast, and handed in the bowl almost at the same time.

Heroes, at this time, they met on a narrow road.

"Li Zheng?" the round-faced girl exclaimed, "Why are you ......?"

"Are you ......" Li Zheng looked at the girl for a long time before he said with some cringe, "Shen ...... Senior Sister Shen?"

"Damn, I haven't known each other for so many days?" Shen Yiyun wiped his mouth and scolded, "White-eyed wolf!"

"It's not...... I have a good memory, it's your problem. ”

"Me?" Shen Yiyun squinted, "Hey, just say it when you praise people for becoming beautiful~~~"

"Good, good...... It's pretty, it's too beautiful to recognize. ”

"Why are you so insincere?"

"Hahaha. The stall owner smiled, "People are embarrassed to say that you have become fat, you look good when you are fat." ”

Shen Yiyun's face turned grim, and he pulled Li Zheng and left.

Unbeknownst to the stall owner, this sentence made him lose a hardcore diner forever.

Li Zheng and Shen Yiyun walked all the way towards the east gate, and after chatting about the recent situation, he learned that the original IChO finals had ended, and the closing ceremony would start at about 4 pm Jijing time today, and the rankings would be announced.

"So, do you want to watch the live broadcast together?" asked Shen Yiyun.

"Won't it delay your work and study?"

"Hey, this is still during the May Day holiday~" Shen Yiyun pulled Li Zheng with both hands and said, "Come on, come on, don't you want to see Zhou Chenghuan and Shi Yang win the award?"

"It's ...... It's very interesting......" Li Zheng thought for a while and said, "But it's still early, we have nothing to do when we're idle, I haven't been here for a long time, and I'm still a little nostalgic." ”

"For example?"

"Five-kilometer run. ”

"......" Shen Yiyun retreated.

"Come on, come on. Li Zheng turned his head and pulled up Shen Yiyun, "Don't give up on yourself, come on, work hard, be strong." ”

"It's not...... Is one kilometer OK......"

"What are you kidding? That's not even foreplay, five kilometers is not that difficult, at first I do feel like I am dying, but once I get used to it, I can wander on the edge of life and death. ”

"Don't ...... Other...... You go back, Iho doesn't look at it or anything. ”