Inside the canopy boat, there was a table in front and two chairs placed side by side, and Yuan Yuan and Zheng sat on it, listening to Yu Yan's lecture very carefully.

"Today we are going to learn the principles and functions of conic curves. This part of the content will be more difficult, and I hope that students will listen carefully. ”

Fang Yu walked in quietly, asked for pen, ink, paper, and inkstone, sat down quietly, bowed his head and pondered.

Yu Yan smiled and said, "This big student, we are in class, do you want to come to study too?"

Fang Yu asked, "Is this a junior high school course?"

Yu Yan said: "The difficult part of high school. It's rare to have such good leisure time, so take the time to study hard. ”

Fang Yu nodded: "Teacher, please start your performance." ”

Yu Yan glared at him, knocked on the table, and said, "You have to be strategic to do any problem, so please remember the following words: the conic curve is well defined, and the focus problem is often used." Analytic geometry is geometry, and analytic science is not alive. There are skills in setting up and eliminating ginseng, and there is no wonder in setting it. The conventional model should be remembered, and the method of selecting the best should not be chattered. Level 2 conclusions are a magic weapon, and step-by-step thinking is effective. The principle of extreme value helps thinking, and the road of harmony and unity. Solve a few major problems paper tigers, well-trained tiger prisons. ”

Fang Yu listened to the clouds, and sighed secretly in his heart, oh yes, he couldn't understand a word. Look at her son and daughter again, as Yu Yan deepened step by step, she got carried away and wrote something on the paper from time to time.

Although these two children have not been to school for a few days, they have not fallen behind in their schoolwork, and this is all thanks to their wives. If it weren't for her, I'm afraid the studies of these two children would be wasted.

But if you think about it carefully, the reason why Yu Yan can have today's results is certainly related to her intelligence and studiousness, but part of the credit is forced by herself. If it weren't for him, would she be able to understand the seven Chinese languages? Thinking of this, he couldn't help but smile beautifully.

Suddenly, he heard Yu Yan scolding: "This classmate, you have to pay attention to the lecture in class." Look at the two classmates, Fang Zheng and Fang Yuan, how detailed and serious the notes are. What about yours? Take it to the teacher. ”

"Teacher ......"

"Bring it!"

Fang Yu sighed secretly, Okay, this girl will give me a serious job, and when it's my turn next time, see how I fix you.

I saw Yu Yan take Fang Yu's notes and read them aloud: "This is a note written by Fang Yu, you all listen to it!"

"I recorded the lady's lecture, and I don't know why. The words are crushed into dust, and only the fragrance is the same. ”

Zhengzheng and Yuanyuan snickered at their father. Yu Yan knew that her husband couldn't understand the lesson, and it was embarrassing for him to let him accompany him, so she asked him to prepare the content to be taught in the class next to him.

"Thank you for your kindness. ”

Yu Yan's class lasted a morning. For a while, the brother and sister will do the topic, and for a while the example question will be explained, but it is quite like that. Fang Yu looked at it happily, for this part of himself, do you still need to prepare?

After math class, it was past noon. Ruyan prepared the meal, everyone had eaten, and then went to class.

"Ahem, cough, ahem, all sit down! Hundreds of lectures, talking about the past and the present, today, Mr. Fang wants to tell you the story of Li Zhi, the son of Li Shimin, Taizong of the Tang Dynasty. Before I get into that, let me ask you a few questions. First, how many emperors was Li Zhi of the Tang Dynasty?"

Before the words fell, he immediately called his name: "Classmate Jin Yuyan, you answer!"

"Uh, teacher, you just ......" Yu Yan was correcting the children's homework in the morning, and for a moment she didn't hear his question clearly.

peeking at Zhengzheng, I saw him quietly stretch out three fingers. Yu Yan immediately understood, and immediately changed her words and replied: "Three!"

"Very good, Jin Yuyan answered very correctly, Li Zhi is the third emperor of the Tang Dynasty. So, before I ask the second question, let me tell you a story. ”

In the later period of Zhenguan, there was a fierce competition for the crown prince. First of all, Li Chengqian, as the crown prince, tried to rebel, and soon the conspiracy was revealed, and Li Chengqian's career as a prince came to an end. Next, Li Tai, the king of Wei, was the strongest and won the favor of Taizong, and the fourth son of the emperor surfaced. At that time, there were countless courtiers who supported the King of Wei, and everyone thought that the crown prince belonged to Li Tai, and Li Tai probably thought the same way, but the final ending had a shocking reversal, and the little-known Nine Emperor Prince Li Zhi became the last person to laugh, and he won the first place and became the final victor as he wished.

"Why can Li Zhi become a dark horse and fight his way out of the encirclement? This is my second question!"

As soon as the words fell, Fang Yu suddenly shouted by name: "Classmate Jin Yuyan, you can answer this question!"

Yu Yan was stunned for a moment, and said angrily: "Teacher, why am you me again?"

"All answers, starting with you!"

Yu Yan said: "Uh...... Maybe luck. ”

"Classmate Fang Yuan, you can answer. ”

Fang Yuan thought for a moment and said, "The coercion was forced to give way after being helpless." ”

"Fang Zheng, it's time for you to answer. ”

Fang Zheng pondered for a long time and shook his head slightly.

"Since I don't know, I'm good to listen to the teacher. Actually, the question is very simple. ”

Fang Yu coughed dryly, took a sip of tea, and continued. While the princes were busy fighting for the throne, what was Li Zhi doing? He didn't do anything, he didn't make friends with the world's heroes like his eldest brother Chengqian, nor did he collude with courtiers like his fourth brother Li Tai. In fact, this is the wisdom that Taoism says: "Do nothing and do nothing, and no one fights with it." Especially in the emperor's house, many princes killed each other for the throne and desperately cultivated power, but they didn't know that this was what the emperor hated the most.

There are countless examples of this kind, and Kangxi's fourth prince Yinzhen can finally inherit the unification by this kind of indisputability. In addition to the support of powerful ministers such as the eldest grandson Wuji, Gaozong's final victory relied on this indisputable wisdom.

At this time, he suddenly raised his hand and spoke: "Teacher, someone identified Tang Gaozong Li Zhi as a faint child, how do you justify it?"

First, when Taizong was dying, he appointed Chu Suiliang and Changsun Wuji as the ministers of Tuogu, but the major affairs of the imperial court were basically decided by the eldest grandson alone, and almost all departments were the cronies of the eldest grandson. Gojong decided to choose the weak harem as a breakthrough. When Gaozong was the crown prince, he met Wu Meiniang, who was also a talented person in Taizong, and finally took her back to the palace after many efforts. Because Gaozong did not like the current queen, in the end, Gaozong finally rebuilt the middle palace with the support of a large number of Hanmen such as Xu Jingzong and Li Tao.

Through the "abolition of Wang Liwu" Gaozong established his authority, and then he cut off the party henchmen of the eldest grandson Wuji step by step, from easy to difficult, in the process, Gaozong did not have the slightest recklessness, but step by step finally drove the Guanlong aristocratic group headed by the eldest grandson Wuji out of the court, and finally realized the absolute monarchy. In this process, Gaozong embodied the quality of a politician, is this the behavior of a stupid boy?

Second, during the Yonghui period, the population of Fu'an increased from less than 3 million households in the Zhenguan period to 3.8 million households, which is known as the "rule of Yonghui" in history.

Third, Emperor Yang of the Sui Dynasty failed to conquer Goguryeo three times, and Emperor Taizong of the Tang Dynasty personally conquered Goguryeo in vain, but this unfinished business was completed in the hands of Gaozong. The territory of the Tang Dynasty was the largest in the time of Gaozong and lasted for 32 years. From this point of view, Gaozong is by no means an idle person, he is an enterprising and pioneering emperor, otherwise it would be impossible to surpass Tang Taizong and complete Taizong's unfinished business.

Fourth, Gaozong was able to accept different opinions, and in all fairness, although Tang Gaozong's ability and courage were not as good as his father's, he was by no means a dumb lord.

After hearing this, Fang Zheng stood up, and respectfully bowed to his father: "Listening to your words is better than reading for ten years." The disciple was taught. ”

In the evening, Ruyan made dinner, and after everyone ate, Zhengzheng changed the medicine for Lu Fei again.

Fang Yu and Lu Fei were drinking a little wine, accompanied by a beautiful wine lady, and it seemed that there was something missing. Everyone sat together, facing the candle flame, looking at the starry sky, Yu Yan gently picked up the zither.

Yu Yan smiled and said, "I'll play a tune for everyone to help Yaxing." ”

Lu Fei stroked his palms and laughed: "That's very good!"

I saw Yu Yan slowly paddling the thin strings, and the beautiful notes jumped out briskly one by one. Bow your head and sing, and the words that pop out of your mouth become smooth, like a flowing stream, bringing people into a beautiful state of mind.

Looking at Yu Yan again, she played it calmly and elegantly, and a fresh note poured out from her fingertips, cool, through time and space, and everyone's comfortable expression unconsciously revealed with the sound of the zheng. It may sound lingering and sad, or the tinkling of spring water, or like a rattle of a horse. Its aftertones are of moderate length, and they are the most expressive of solemn and simple lyrical music. The sound of the zither is like the gurgling water under the bridge, the clear cries of Gu Hong flying by, and the graceful sigh of Yi An, like looking at Xue Tao's raccoon flower note, looking at a faint orchid, quietly opening in the distant night sky.

Yuan Yuan changed his clothes and stood in front of everyone stunningly, dancing like a swallow nesting and flying high like a magpie bird night terror. The beautiful dance posture is leisurely and soft, and the agile swift flying body is as light as the wind. Her wonderful appearance is superb, and her quality is jade and clear. Cultivate his appearance and conduct to show his will, and his monologue is thinking about the distant and dark world. The ambition is to express the momentum of the high mountains, which is intended to dance in the flowing water.

Seeing Yuanyuan, his eyebrows suddenly frowned, showing infinite sorrow, suddenly smiling and his cheeks were smiling, showing boundless joy, suddenly he lowered his eyelashes, showing a low and turning shyness, suddenly opened his eyes and looked at him, showing the exuberance of the storm, suddenly nodded his forehead softly and stroked his arms, painted his eyes and eyebrows, and performed delicate and proper grooming; suddenly he stood upright, pressed the arrow and drew the bow, so that people could almost hear the sound of the strings.

I saw that the girl under the moon sometimes raised her wrist and lowered her eyebrows, sometimes lightly Shu Yun's hand, and the fan in her hand was closed and held, like a pen walking in the dragon painting Danqing, the jade god was windy, elegant and vigorous. The sound of music is clear in the ears, the folding fan in the hand is like a wonderful pen like a silk string, turning, throwing, opening, closing, twisting, rounding, bending, flowing water like a dragon flying like a phoenix dancing.

Fang Yu couldn't help but sigh: "The song of curbing the clouds is clear, and the snow is light." As long as the monarch is in exile, the monarch will pour the country into the country. ”

"The monarch is pouring into the country!, that's a good thing!" Lu Fei exclaimed, "They all say that they only envy mandarin ducks and don't envy immortals, I don't envy mandarin ducks or immortals, I really envy virtuous brothers!"

Fang Yu said with a smile: "Brother Lu, you are such a loving and righteous woman as Yan, what more can you ask for?!"

Lu Fei laughed, raised his wine glass, and said to Fang Zheng: "Your mother plays the piano, your sister dances, little brother, what about you?"

Fang Zheng thought about it, looked at the scenery of the winter night, thought about it, and said with a smile: "Little brother occasionally got a poem." ”

Lu Fei said in surprise: "Oh, hurry up!"

"The skin is not dirty and innocent, Xiaolai Yuli Yao Pond. Slim green cover, Ying Ying Sujing, when the makeup is clean. Too liquid waves, neon clothes dance, broken soul flow. Even still, the old days are fragrant and light pink, the flowers are not similar, and the people are haggard.

Desire to summon the Limbo fairy. Flat boat, vast waves. I only looked back, the ice curtain was half-hidden, and the bright and chaotic fell. The moon shadow is miserable, the dew flowers are scattered, and who is leaning on the small corner. Gongfang Alliance, there are still amphibious snow herons, and the night cold startles. ”

Lu Fei was stunned for a long time when he heard this, and then stroked his palm and exclaimed: "Brother, your family is upright, and you will definitely achieve great things in the future!"

This is a song written by Lu Tong in the Song Dynasty "Water Dragon Yin, Su Muscle is Not Dirty and Innocent". For the Tang Dynasty at this time, let alone Lu Fei, I am afraid that the entire Tang Dynasty will think that this poem was written by Fangzheng.

Fang Yu smiled and said, "Don't ask for great wealth and wealth, but ask for a clear conscience." ”