Flowing fire in July, Weiyang in August, and clothing in September.

July passed, but instead of getting cooler in the south, as the old saying goes, it became hotter and hotter.

The lychee season is finally over, but don't worry about living without fruit, because the harvest of longan is coming one after another.

Longan, also known as longan, is sweet and juicy compared to lychee, has a unique flavor and has higher nutritional value.

What nourishes the heart and spleen, strengthens the spleen and stomach, nourishes muscles, and nourishes qi and blood, in fact, is secondary, the important thing is to beautify and prolong life.

Well, although Lu Xi had eaten longan before, she didn't know much about longan, so she consulted Du Niang to know this knowledge.

The Lu family has three longan trees, two varieties are Chuliang and one is Shi Kip. Don't look at the small number, because they are all decades old, and the yield of one tree is hundreds of catties. When the longan of the three trees is picked, there are more than 1,000 catties.

More than 1,000 catties of fresh fruits, eaten until the tongue is a few inches bigger, astringent, light, greasy, it is impossible to eat it all.

Usually, one part is eaten, most of it is sold, and then a part is made into longan meat by yourself.

It takes a lot of time to make longan meat by yourself, so Lu's mother Deng Yufang has another excuse to let Lu Xi go downstairs besides chasing geese.

To make longan meat, on the variety of Chu Liang, Mother Lu has her own unique method.

The first step is to pluck the fruit, then peel off the shell, and then carefully remove the core with a toothpick. In the process of picking, we should pay attention to maintaining the integrity of the pulp as much as possible, so that the flesh of the kernel is tender and crystalline, and it looks like a delicate little lantern, so it is also called lantern meat, and finally put the lantern meat on the sieve and place it in the sun to expose to the sun.

If the weather is good, the moisture can be dried off in a few days, and the flesh of the moisture is transparent and golden, and it looks very good, and it is the raw meat.

Pure natural and chemical-free yuan meat is extremely high in sugar, and it is generally not eaten alone. Usually put a little when making soup or boiling sugar water to clear away heat and detoxify, appetize and benefit the spleen, nourish blood and calm the nerves, replenish deficiency and grow wisdom.

In addition to the two special fruits of lychee and longan, there are also yellow peel, pineapple, jackfruit, banana and papaya......

It's countless, and Lu Xi thinks that there is no problem at all in filming an episode of China-Fruit in the town again.

Her summer vacation is like this in the fruit harvest period, get up in the morning, eat breakfast, in the morning while eating lychee or longan or yellow peel or jackfruit, while watching the "High School Mathematics Competition Peiyou Tutorial", lunch at noon, the afternoon becomes hot, while eating the chilled fruits, while watching the "High School Mathematics Competition Peiyou Tutorial".

In the evening, when the weather cools down, if you are not tired of eating, you can continue to eat like this in a loop.

"High School Mathematics Competition Training Course", a test book with half the thickness of a brick, was read in this environment, and all the questions were passed.

Senior Brother Ming said that after brushing the "5-year College Entrance Examination 3-year Simulation", and then going through the "High School Mathematics Competition Training Excellence Course", it was almost the same as a try, so Lu Xi found a few test papers for the National High School Mathematics Joint Competition (referred to as the league) on the Internet.

There are 8 fill-in-the-blank questions and 3 answer questions, with a total score of 120 points, and the solution time is 80 minutes.

The first test is to test the students' basic knowledge of high school mathematics, basic skills and the ability to use knowledge comprehensively and flexibly.

With 5.3 and Peiyou tutorials as the foundation, Lu Xi did not feel uncomfortable when he started a test paper. She was able to solve all 11 questions in almost an hour.

After making a few sets of papers, she lost her challenge, and she found the papers of the second test (officially called the league plus test) to give it a try, and the results of this trial were certainly not much better.

A two-test paper and four questions, some can make one or two of them all, and some can barely do three, but compared with the reference answers, she found that even if she made it, the method of solving it was tortuous and tortuous, and she should have been able to solve it simply, but she had no choice but to complicate it.

And there is no escaping that in the process of answering, she felt very difficult, or thankless.

When problems are found, they naturally need to be solved. She frowned and found the syllabus of the league, and immediately knew what her problem was.

The process of a high school Olympiad student is like this, for example, Lu Xi, assuming that she participates in the competition, there are no accidents, and it is smooth sailing.

First of all, she had to participate in the National High School Mathematics Joint Competition, and the results of the first and second tests combined ranked among the top in the total score, won the first prize in Southeast Province, and was selected for the provincial team of Southeast Province.

Then, on behalf of Southeast Province, he participated in the Chinese Mathematical Olympiad (CMO, also known as the Winter Camp), won the first prize in the country, ranked among the top scores, and was selected for the national training team.

He was selected for the national team and finally represented China in the International Mathematical Olympiad (IMO).

Speaking of the National High School Mathematics Joint Competition, the league is divided into two parts, the first part is a test, which examines the foundation of students, and the scope of the examination is not separated from the college entrance examination syllabus.

The second part of the league is the additional test, also known as the second test.

There is a world of difference between the second test and the first test, because the second test is in line with the Chinese Mathematical Olympiad and even the International Mathematical Olympiad. In terms of knowledge, there is a more in-depth expansion, and at the same time, some content beyond the high school mathematics curriculum standards has been added. These contents can be roughly divided into four modules: plane geometry, algebra, elementary number theory, and combinatorial problems.

The reason why Lu Xi couldn't solve the problem of the second test well was because the questions in the second test involved knowledge outside the course standards that she had not touched.

It is difficult for a clever woman to cook without rice, she has not learned that knowledge, she struggles with the knowledge in the course standard, and can only solve part of the answer in a roundabout way.

Recognizing his knowledge deficiencies, Lu Xi began to officially start learning the content of the second exam.

The "Olympiad Classics" series of books focusing on the four modules of geometry, algebra, number theory and combinatorics has become her goal.

At the same time, she absorbed the lessons of the single direction of the study, and when tackling the "Olympiad Classics", she flipped through the "Mathematics Competition Research Course" and studied with the "Olympiad Classics" for cross-horizontal comparison.

Buried in books, time always flies very quickly, and most of August has passed in a blink of an eye.

With the passage of time, the harvest season of longan is helpless to go after all, but it doesn't matter to Lu Xi, because his mother has dried some dried longan. Note that it is dried longan, not longan meat. Dried longan is a fresh fruit directly in the shell and dried, most of the water is removed, put in the refrigerator, has a long shelf life, you can eat it if you want to eat it and peel the shell, the flavor is excellent.

However, longan is dry and hot, and it is easy to get angry if you eat too much, so it is not suitable to eat a large amount at one time. As a snack, it is better to eat a little once in a while.

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