On the fourth day, he finally couldn't sit still anymore and got up to cook. When using the steamer to heat the steamed buns, he couldn't help but think: "If only there was a microwave oven, it only needs to be lightly pressed, ding, and it can be done in a minute." Thinking about this in his heart, he subconsciously said it out of his mouth.

Zhou Aiping happened to hear it next to her, and said with a smile: "Are you going crazy? ”

Tian Xu sighed: "Yes, Aunt Zhou, how can you make the aura vibrate at high speed like a microwave oven?"

Zhou Aiping asked rhetorically: "Then how did the microwave oven vibrate?"

Hearing Zhou Aiping's statement, Tian Xu was stunned: "Yes, how did the microwave oven vibrate?"

Tian Xu didn't like science and engineering since he was a child, and he really didn't know how the microwave oven worked. He turned on his mobile phone to surf the Internet and searched for the working principle of the microwave oven, and the introduction of nearly 10,000 words on the Internet made him look like he couldn't understand it at all.

Later, he had to use his mother's strong reading and inductive ability to forcibly abbreviate this article, until the end, summed up a sentence: the microwave oven is a high-frequency electromagnetic wave that can heat polar substances after the electrons are stimulated with electricity to resonate with electricity. If we simplify it a little more, it can also be said that resonance can produce microwaves.

He doesn't need microwaves, he just needs to make something like aura or air vibrate and cause it to rub heat from the inside to produce high temperatures.

He couldn't figure out how electrons resonated, and he didn't want to, but he knew that the so-called resonance was that matter was very sensitive to vibrations of a certain frequency, and could accumulate vibrations continuously input at this frequency, and finally reach a very high vibration amplitude, forming a special kind of energy.

But it doesn't seem to work. Resonance has a natural frequency, and if the substances he uses to generate heat are different, their frequencies are also different, and the control methods are very different, so he can't study each one thoroughly and construct different formations for each of these substances.

Besides, the result of the resonance didn't seem to be what he wanted. The result of resonance is nothing more than two kinds of matter, or the material that vibrates together, and finally twists into a rope, which not only does not produce high temperatures, but also has a destructive effect on the outside. Or the internal heat is out of control and ignites the aura, then it becomes burning the aura as a pill fire, which is not what he needs.

After pondering for a long time about the working principle of the microwave oven that he didn't understand at all, Tian Xu suddenly found that he didn't need to learn the principle of microwave occurrence at all, he only needed to understand how the microwave heated food, because he just wanted to use the aura to heat the elixir or air like a microwave through the formation method, and he didn't need to really make a microwave.

Tian Xu adjusted the direction of thinking again, the original microwave heating is much simpler, it just repeatedly pulls the food molecules to be heated through the high-speed oscillating electromagnetic field, so that there is friction inside, friction generates heat, and the food is heated.

As long as the aura formation he needs to build can push the aura, air, or elixir in the formation to reciprocate, when the frequency of reciprocating movement is high enough, it should be able to produce Danhuo.

This force of push can be divided into two types, pull and push. The imprisoning effect of the formation on the aura or air is actually similar, as long as the position of the imprisoned substance changes, the formation will be touched and pushed back to its original position. Changing this formation, allowing this imprisoned force to relax the control of the imprisoned substance within a certain range, so that it has a certain space for movement, and then pushing the imprisoned substance to reciprocate like pushing a swing, may be able to achieve the goal.

Tian Xu tried to adjust the formation, and the vibration really happened, but the frequency was far from meeting the requirements, and the difference was several orders of magnitude, and it basically couldn't achieve the effect of heating. He turned down the amplitude of the vibrations, and the effect was not noticeable.

Tian Xu tried to strengthen the power of the aura in the formation, which had a certain effect, and after repeated trials, he found that after compressing the aura, the frequency of vibration had increased significantly. He understood that the frequency of the oscillation could be increased by increasing the stiffness of the aura that propelled the "swing".

After several efforts, the effort finally paid off, and a high-temperature flame was condensed by him, emitting a bright light not far in front of him. As the temperature rose, the light gradually changed from red to yellow, white, cyan, and blue, which excited him.

Tian Xu slowly practiced manipulating the flame, the size range, the temperature, and the direction of heating...... As time passed, he became more and more proficient in controlling this flame, and the flames that could be controlled at the same time also expanded from one to two, three, and four, and four were his limit, and if he had more, he would get out of control.

Another three days have passed, Tian Xu's ability to control the flames has almost reached the limit, and the progress is already very obvious if he continues to practice, he stood up, moved his body that had become a little stiff due to sitting for a long time, and was ready to go out for a lap.

In the past few days, Zhou Aiping has been silently watching him from the side, and she has deep feelings for Tian Xu's perverted understanding. It took her three years to realize the Danhuo, and she was already called a genius by the elders in the Shennong Sect, so what about this guy who didn't know how to refine the Dan at all more than a month ago, but now he can refine the fourth-level super-grade pill without the Danhuo and condense the Danhuo?

In the end, she decided not to tell the disciples in her sect about this kid, it would discourage others too much.

Seeing that Tian Xu went out, she set up the pot and cooked a meal for him. After this period of getting along, Zhou Aiping has learned Tian Xu's habits, and after he continues to practice or attain enlightenment, he will definitely cook and eat. Although eating was no longer a necessary condition for a cultivator to survive after reaching the advanced level of Qi Gathering, Tian Xu was not tired of it, and his space bag was also filled with all kinds of food and utensils.

Zhou Aiping herself also likes the lifestyle of ordinary people, but she is not limited to eating like Tian Xu, but doing housework, and cooking is one of her hobbies.

An hour later, Tian Xu came back, holding a thick yam in his hand, and said to Zhou Aiping: "Aunt Zhou, my luck is really good, I came across a worldly medium-grade yam. ”

Zhou Aiping looked at it, this big yam was several catties, and said: "This thing is good, leave it to Ziyan to eat, this is better than kudzu." ”

Tian Xu nodded and said, "Okay." Have you cooked? I'm just hungry. ”