"If you just add combustion aids, the temperature of the flame will not be greatly improved. The main function of combustion aids is to make the combustor burn more fully. Therefore, the most fundamental thing to improve the temperature of the flame is to find a way on the combustor."


    "The fire spell we cast seems to have no combustibles, but have you ever thought about where the mana or true yuan you cast is? Can we understand that mana or true yuan is the combustor of fire spell? Then, if you want to make the temperature of the flame higher, you have to find a way from the combustibles, that is, you have to start from the mana or true yuan."


    "In fact, more advanced spells already involve increasing the flame temperature of Fire spells through the change of mana, that is, enhancing the power of Fire spells in burning. However, with your current cultivation, it is obvious that you have not reached that stage. However, this does not mean that there is no way. Just like the experiment I just did, we can learn from external objects Use your strength to do what you can''t do. "


    "Looking at this fireball, I will add some things to it. These things are usually easy to get, but as long as they are used in the right place, they can play an unimaginable effect. Of course, you must be careful when using them. After all, foreign objects are not as easy to control as your Zhenyuan. If they are not good, they will hurt others, not yourself!"


    Ye Zan took out the prepared burning agent, which is somewhat similar to the thermite used in the scientific and technological world, but considering the particularity of magic, he also adjusted the formula.


    Aluminum, a metal, was refined and used by human beings very late in the world of science and technology, although it had great reserves on the earth. That''s because it''s difficult to refine. Aluminum can''t be refined with the original smelting technology. Until we have a certain scientific and technological foundation, we really have the ability to refine aluminum on a large scale.


    In this world, although in the secular world, the production capacity is still extremely low, just like the medieval era of the world of science and technology. However, the technology mastered by monks can be compared with the technology of the interstellar age in the world of science and technology in many aspects. Therefore, it is not very difficult for practitioners to extract aluminum.


    However, due to some physical properties of aluminum, even if someone has refined aluminum, it has not been popularized and applied on a large scale. After all, for practitioners, it involves refining metal, that is, refining utensils. However, whether it is refining flying sword, or refining magic tools and even magic weapons, aluminum with soft physics is not a good choice.


    Ye Zan found a simple method to refine aluminum by combining the knowledge of refiners. Although it is not comparable to the industrialized refining technology, it is enough for these disciples to refine the required aluminum by themselves. Anyway, it''s just used to make thermite, not to produce aluminum products in large quantities. Even if a small piece is refined a day, it''s enough to prepare a thermite.


    As for the refining method of aluminum and the preparation method of thermite, ye Zan will naturally take it out without reservation and teach it to these inner disciples.


    As the thermite was thrown into the fireball, the originally dark red fireball suddenly burst into dazzling white light, which whitened the whole lecture hall. The disciples listened to Ye Zan''s words and stared at the fireball to see what would happen to the fireball after adding thermite. As a result, all of a sudden, everyone''s eyes were shaken. Their eyes felt worse than looking directly at the sun, and they involuntarily screamed.


    With the dazzling white light, the extremely hot heat wave turned the lecture hall into a stove in the twinkling of an eye. Especially those in the front, who are close to the fireball, have hot skin baked by the heat wave, as if their eyebrows and hair would be scorched.


    Although yezan can exert field control and keep the fireball in mid air, he has no way to deal with light and heat radiation. If you want to control the propagation of light and thermal radiation, unless he shows the trick of black hole swallowing, it is not a real black hole. It can only restrict the diffusion of light and thermal radiation to a certain extent.


    However, ye Zan did not intend to restrict light and heat radiation. After all, whether it was dazzling light or baking heat, it would not cause substantive harm to these disciples. Therefore, it is easier for them to accept this method by letting them experience the change of adding thermite.


    The disciples in the front row responded well. One by one, they immediately launched various defenses in front of them. Water and light films stood in front of them to block the subsequent high-temperature baking. On their faces, in addition to the color of pain, they were also more shocked. Obviously, they had enough feelings about the change of the fireball.


    The amount of thermite Ye Zan put in was not very large, so the fireball soon began to recover gradually. The strong light was gone, and the thermal radiation was not so strong. After recovering their eyesight, all the disciples removed their protective measures in front of them.


    "How do you feel? With the simple fireball technique and the simple burning agent, does this effect surprise you a little?" Ye Zan asked the disciples with a smile.


    This is not a small surprise. It''s just a big jump, okay! Those disciples secretly feigned Ye Zan''s questions, but they also had a strong interest in Ye Zan''s burning agent. Their vision is still a little blurred, and they still have the burning pain after being roasted. How can they not know how terrible the fireball has just become.


    "Well, don''t look at me like that. Next, I''ll tell you about the preparation method of this burning agent." under the eager eyes of the people, ye Zan stopped selling off and began to talk about the preparation method of burning agent.


    When those disciples heard that ye Zan was going to say this, they immediately looked at Ye Zan with bated breath. No one dared to make any movement at this time. They are different from the students in the world of science and technology. After all, they are adults and know what they need.


    The preparation method of combustion agent is very simple, and there is no need to talk about too many principled things, so ye Zan finished in a few words. Those disciples were worried that it was very complicated and difficult to master, but they didn''t expect that the preparation method was so simple that they couldn''t believe it for a while after listening to it.


    "Now, I''ve taught you the preparation method of incendiary agent. I believe you should be able to master it with your ability. Next, let''s try and prepare incendiary agent by yourself." as he said, ye Zan took out the prepared preparation materials from heaven and earth ring. Then he waved his hand, and the wrapped materials flew to the disciples like a rain of flowers in the sky, and fell gently in front of each disciple.


    These disciples, who can enter the inner door and practice to build a foundation, are at least smart people, not to mention having an IQ of 250. Therefore, even in short, as the content of the first class is known by more people, ye Zan''s class has welcomed more and more students. Not only the inner disciples, but also the pro disciples began to listen to Ye Zan''s lectures on time every time. Later, those golden elixir masters also became students who listened to Ye Zan''s lectures. Even in the end, even the ancestors of Yuanying, such as Wu Changsheng and Jin Dasheng, often came to lectures.


    After all, what ye Zan said is not only for the knowledge of primary practitioners, but also for the knowledge that has a certain impact on the whole spell system. Ye Zan talks about not only how to improve the power of fire magic from the perspective of combustion, but also how to analyze various spells through some knowledge of the scientific and technological world, so as to affect the power of spells in all aspects.