In this world, a monk''s magic formula pinches the knuckles of the other four fingers with his thumb. The range of action is very small and it is not easy to be perceived by his opponent. Even some people really have sharp eyes. For example, people with insight like Ye Zan can see what spells the caster is preparing. However, the caster can also create the illusion of casting other spells to the enemy by falsely pinching the hand formula.


    Reality is reality. Many things need to be practical. Even if some flashy things don''t take the initiative to give up, they will be cruelly eliminated by reality. Just like this magic formula, how to use it faster and more secretly is the main topic. No matter how beautiful and pleasing it is, the opponent will not let you go because of this.


    There are also some film and television animation works, casting spells or performing any moves, but also shouting out the names of spells or moves, for fear that their opponents don''t know the same. This can''t be said bad. After all, in the eyes of the audience, hearing those moves of crazy pulling cool losers to explode the sky will really arouse their enthusiasm and put them into the situation of the work. However, it is obviously inappropriate to put it in reality, so it is said that art originates from life and is higher than life.


    After hearing Ye Zan''s words, the inner disciple who was called up, although he didn''t know what ye Zan suddenly wanted to say, he honestly pinched the basic tricks again.


    There are not many basic tricks, that is, tiangan "a, B, C, D, e, oneself, Geng, Xin, Ren and GUI", plus dizhi "Zi, Chou, Yin, Mao, Chen, Si, Wu, Wei, Shen, you, Xu and Hai". The real magic formula is to combine the heavenly stems and earthly branches to form the unique formula of each spell.


    The inner disciple raised his hands and deliberately slowed down, but he still showed all the basic skills in an instant. After stopping his movements, he looked a little uneasy, looked at Ye Zan, and said respectfully, "report back to my ancestor, the disciple has shown it."


    Ye Zan nodded and said, "yes, the basic skills are quite solid."


    Hearing this, the inner disciple suddenly breathed a sigh of relief, and at the same time, his heart also burst out a bit of joy. In fact, there is nothing unfamiliar with such basic tricks in the whole inner door. He just happened to be asked by Ye Zan. Therefore, he did not expect that just showing this basic formula would get the praise of Ye Laozu.


    In fact, the reason why Ye Zan praises this sentence is not from his heart. It is just a copy of the so-called "encouraging education" in the world of science and technology. In terms of education in the world of science and technology, there were two schools: one was "Frustration Education" and the other was "encouraging education". The ideas of these two factions can be said to be diametrically opposite. No one can convince anyone, and everyone has successful cases in hand.


    The so-called "Frustration Education", to the extreme, is that students do nothing wrong and do nothing well enough. You think you''re good enough? Sorry, you''re just a garbage. What''s good about what you do? There are problems here and there, which shows that you have no intention at all. "Idiot", "retarded", "fool" and "why don''t you die" are the common words of frustration education teachers.


    Supporters of frustration education believe that constantly cracking down on students'' self-esteem can avoid students'' arrogance, enable students to have better pressure resistance and turn grief and anger into strength.


    Indeed, there are some such students, and there are also so-called winners who work hard all the way up with resentment against their teachers. When they reached the peak of their life, they understood the teacher''s "good intentions" in those years, and their resentment against the teacher became a heart of gratitude. However, there are also those who have been harbouring resentment and finally even take action to retaliate against the teacher.


    The so-called "encouraging education" is to praise frankly. Even if students don''t do a good job, they will find out the shining points and express their appreciation. You failed in this matter? It doesn''t matter. Your performance in this matter is commendable. With your talent, as long as you work harder, this difficulty is nothing at all. In short, it is praise, praise again, praise for success, and praise for failure is not without praise.


    Those who support and encourage education believe that praise and praise are the driving force for students to move forward, which can maximize students'' enthusiasm and enable students to devote themselves to learning with a happy attitude. In this way of education, there are also many successful cases, but there are also those who are praised and can''t find the north.


    Ye Zan himself is probably a supporter of the "encouraging education" school. Anyway, when he went to school, he felt that the teachers who adopted "encouraging education" would always make him feel better. Of course, he has never been a teacher or received education in this field. At most, he is affected by a little and instinctively boast.


    Then, ye Zan didn''t let the disciple sit back, but said, "you should be able to display the fireball of fire magic."


    "I can tell you that," the disciple replied quickly.


    "Then show it again." Ye Zan said faintly.


    However, when he heard this, the disciple hesitated. He looked at the surrounding scene and asked, "Grandpa, is it right here?"


    Although the lecture hall is not small, it seems a little cramped and crowded due to the large number of people coming to the lecture. Although it is not close to people, there is not much space to cast spells. Although the fireball is only a primary spell, it can''t be controlled after it is thrown out. What trouble will it cause if it''s not well kept.


    Ye Zan smiled faintly and said indifferently, "I''m here to watch. Just show it. You don''t have to worry about anything else."


    Yes, there''s nothing to be afraid of when Yuanying''s father is present! The disciple immediately settled down and said, "I''ll obey."


    As he spoke, the disciple raised his hand again, touched his finger twice and pinched a magic formula of fireball. After all, it is the most elementary spell, and the formula of fireball is also very simple, which is just a combination of two basic skills of "Wu Si". With the completion of the Dharma formula, a fireball about the size of a basketball condensed out of thin air in front of the disciple, and flew away as soon as it appeared.


    Ye Zan stood in front of the lecture hall and saw the fireball flying towards this side. He raised his hand and pressed it across the void. Suddenly, an invisible force field shrouded the fireball and imprisoned the flying fireball in the air.


    Most of the inner disciples have never seen anything in the world. They are the most powerful people they usually see, that is, several golden elixir masters who come to teach. Therefore, although Ye Zan knew that ye Zan was the ancestor of Yuanying, he couldn''t help but exclaim at this scene, as if he saw something terrible.


    Ye Zan smiled and shook his head, grabbed the imprisoned fireball in the void, and held the fireball in front of him with the invisible force field. He looked at the imprisoned fireball. Even if he didn''t use the way of insight, he could instantly understand all the data of the fireball, so he said to the caster: "well, it seems that you have made a lot of efforts in this fireball technique."


    Praised again, praised again! The disciple was so flattered when he heard Ye Zan''s words that he even had the illusion that he would be accepted as a pro disciple. Of course, he also knew it was an illusion. Even if he slipped away again with fireball, he would not be favored by a Yuanying ancestor.


    "Well, let''s see this fireball." Ye Zan turned his eyes to other disciples and said to the crowd, "this fireball is the primary spell of fire execution. Most of you sitting here must be able to cast it. Then, who knows how high the temperature of this fireball is?"


    "Temperature?" Ye Zan''s question made the disciples who wanted to show a small face in front of Ye Zan look at each other.


    In this world, there is no specific standardized rule for temperature. At most, it is the subjective feeling and judgment of "cold", "hot" and "neither cold nor hot". Even the danxiu, who play with fire all day, are very particular about the temperature, but they haven''t come up with a unified temperature measurement tool. For the elixirs, the heat needed for alchemy depends more on experience. They think it''s OK when the heat comes. If they don''t think it''s enough, they can add fire.


    Therefore, when ye Zan asked for the word "temperature", many disciples could only understand the literal meaning. They thought Ye Zan was saying that the fireball was "warm". "Warm" means neither hot nor cold. Although fireball is only the most primary spell, it can not be said to be warm.


    Seeing that everyone was puzzled, ye Zan immediately woke up. It seems that he has to get out the concept of temperature first. So he waved his hand, and the fireball in front of him floated to the side, and then said to the people, "the word temperature, you can understand that it means the power of fire. I have a magic instrument here that can display the temperature as a number, which can be easy for you to understand."


    Ye Zan didn''t talk more basic, but took out the thermometer directly. If you really want to talk about temperature in detail, there are too many things to talk about, which is equivalent to giving them physics classes. Anyway, those physical knowledge didn''t have much impact on spells, so ye Zan wasted his saliva lazily. If someone is really interested in this and wants to have an in-depth understanding of the knowledge, he doesn''t mind telling the other party alone.


    Ye Zan''s connection between "temperature" and "the power of fire" gave those disciples a certain one-sided understanding of the word "temperature". In their opinion, ye Zan''s "temperature" and the magic instrument that can display the temperature as a number should be like the relationship between weighing "weight" and "scale".


    At this time, ye Zan put the thermometer on the edge of the fireball. The small screen of the thermometer immediately displayed a line of numbers, 568.


    The screen of the thermometer is small, and the number is smaller. Fortunately, all the disciples present are inner disciples. With the cultivation of building the foundation, they have much better eyesight than ordinary people. They can clearly see the line of figures.


    "You see this number. This number is the temperature of the fireball. You can also understand it as the power of the fireball. After all, the main power of fireball and many Fire spells is combustion. 568, that is, 500 degrees. The fire at this temperature is actually equivalent to the fire in the stove of ordinary people." Ye Zan explained to the crowd.


    "Is it just the fire in the stove?" the disciples, hearing Ye Zan''s statement, seemed a little difficult to accept. After all, this fireball is a spell. In their opinion, it is also a tall thing at the primary level, and the fire in the stove is too low.


    "Hehe, don''t you believe it?" Ye Zan asked with a smile.


    Although no one dared to question Ye Zan''s statement in front of Ye Zan, every disciple''s face still showed an unacceptable look.


    "If you don''t believe it, you have to believe it. I''m too lazy to verify it for you. You can just think of it and verify it later. Or what can you do when you go back to the fireball, the temperature of 500 degrees, or the power you understand? You have practiced the fireball skill at ordinary times, and you should also know what the fireball can burn. It''s no problem to burn people, after all This spell was originally used to do this. It''s OK to burn ordinary wooden things. "Ye Zan stopped here and asked everyone to turn their attention back to themselves before he said," but can it be used to burn copper and iron? "


    "In the secular world, copper, iron, gold and silver are refined by fire?" one disciple finally couldn''t help saying.


    "Can you burn copper, iron, gold and silver with your fireball skill?" Ye Zan asked.


    The crowd shook their heads.


    "Fireball is fire, and the torch is also fire. There is fire in the stove. Burning copper, iron, gold and silver is also fire. Why can the power presented be different. Fire is not an object, but a phenomenon, which refers to the burning phenomenon of objects." Ye Zan further explained.


    In fact, people in the world also understand what ye Zan said, but no one comes to a conclusion or goes back to the source.


    In this world, many things are like this. Everyone takes it for granted, but no one explores the root. Before the development of science and technology, the world of science and technology is actually the same. For example, everyone knows that people will die if they don''t breathe, but few people explore why. Before knowing the composition of air, people generally do not regard air as a specific substance.


    "This is the problem of temperature. All substances have a burning point. Only when the temperature reaches this burning point can this thing burn. In your understanding, it is the power of fire. Then, what I want to tell you next is how to affect the temperature of fire." Ye Zan finally talked about the theme of this lesson.