After returning from Heihe City and resting for two days, Wu Hao can clearly feel that there are fewer idle dancers in Qinghe city. Basically, they all go after Lingkong beast, or some of them know that they can't get it. After all, there is only one Lingkong beast, but there are so many people chasing it that they can't fall on themselves. Some people go to Longya city, I want to go to Longya old man to make weapons. After all, Longya old man can't run. Although he has only one, she can make many weapons.

Qinghe city is colder than usual, but the college is still lively.

But there are only two people in this class, one is Wu Hao, the other is Ling fei'er.

However, Qingyin has ordered everyone to come back. The problem is that some people are very far away, and it will take a long time for them to come back. Qingyin also said that they don't need to come back immediately, so many people don't use the card Qingyin gave them, but go back slowly.

It's very easy to teach them both in the classroom, even a little sad. They practice together at home. Now in the college, they still teach their husband and sister. This kind of feeling makes her smile with a kind of fun.

Wu Hao and Ling fei'er also find it funny that there are only two of them on the playground in such a big classroom. This feeling is still a bit strange. After all, it's in the college, not at home. If it's at home, it's normal. But in the college, there are only two people. It's still a bit strange.

"Cough, come on, don't think so much about it. Let's hurry up. Next, I'll teach you a new skill." Qingyin adjusted her state. Anyway, it's just two of them now. Wu Hao, in particular, hasn't learned many new skills. I'd better hurry up and teach him more skills.

"Come on, what are the new skills?"

"I'll teach you the same medium level skill, cold purgatory."

At the beginning of formal teaching, Qingyin finally put away her smile and looked at them seriously.

"Ice purgatory is a skill that uses the power of the nether world to create ice and cold space. The direct lethality is not as good as the money from the netherworld fire, but the indirect lethality and killing range are far more than the netherworld fire."

Qingyin said, a cold air appeared in her hand. When she pressed the cold air on the ground, his body was immediately frozen, and the grass on the grass became extremely hard ice, and all of it broke with a touch.

"Interesting."

Wu Hao is interested.

"This skill is hard to say and easy to say. Of course, I mean, for other people, for you two, especially for your husband, it must be a very, very simple skill. With your ability, if you want to understand this skill, I think it will only be a while." Qingyin smiles and then says, "the form of cold ice purgatory is a little similar to that of netherworld fire, but on the contrary, using fire requires the use of Reiki molecules to make a strong collision to raise the temperature. Cold ice purgatory requires the opposite. The more you keep still, the lower the temperature, the lower the temperature, The effect of ice purgatory will be stronger. "

"That's the principle." Wu Hao immediately nodded, already understood the reason of the ice purgatory.

All temperatures are generated by molecular motion. The stronger the molecular motion is, the higher the temperature of any object will be. On the contrary, the weaker the molecular motion is, the lower the temperature will be. All this is the same for any universe. When the molecular motion stops completely, all life will stop and disappear, and the same temperature will be minimized, That's what ice purgatory uses.

Wu Hao didn't wait for Qingyin to speak. He immediately sat cross legged and closed his eyes. First of all, he felt the existence of those forces. The movements of those small molecules were very violent and could maintain the normal living temperature of the world. But after feeling them, he only needed strong ideas to support them. It was inevitable to use his ideas to fight against these molecular movements, So Wu Hao first released his mind to control these molecules and let them slow down bit by bit. The temperature of his palm gradually decreased and a cold air slowly came out.

Qingyin looks at him in surprise. Unexpectedly, before he teaches him the method, he has instantly understood the essence of this skill, and so soon released the ice purgatory.

Theoretically speaking, it is much more difficult to make the force molecule static than to accelerate the force molecule, because the acceleration of the force molecule can be carried out in more ways, but the static operation of the force molecule can only be carried out completely by the mind, and it can't replace the extremely strong mind control ability in any other way, otherwise it's impossible to complete this thing.

Although Meimei was surprised by him, she was always surprised by his divine tree when she saw him practicing new skills. Qingyin looked at the cold air rising from his hands and laughed with emotion and joy.

After all, it's his own man. He's powerful. Of course, he's more happy.

See he instantly mastered this skill, Qingyin put his attention on lingfei'er, this girl has not mastered, so she just carried out one-to-one teaching.

Wu Hao closed his eyes and felt the slowing rhythm of all the powerful elements in his hands.

According to this principle, the higher the degree of prohibition, the colder it will be. The higher the level of ice purgatory, the greater the lethality it will be. However, if we want to completely ban the force elements, the stronger the idea of consumption will be. On the contrary, when all the molecules stop moving, it will cause ice purgatory in the true sense, Even more terrible than what Qingyin just showed.

Although the ice purgatory just shown by Qingyin has reached the level that can cause terrible damage, Wu Hao can feel that the molecular structure has not completely stopped, that is to say, it just keeps static in a relative state, and the force molecules in it still keep moving relatively slowly, only reaching a lower temperature, But it didn't reach true absolute low temperature.

Only when the molecules stop moving completely can there be a real absolute zero.

In the state of absolute zero, the molecular motion will really stop completely. On the contrary, only when the single molecular motion stops completely, the temperature will reach the true absolute zero.

However, it is extremely difficult, even impossible, for Lang Sunzi to stop sports completely. Therefore, the essence of this cold purgatory is to lower the temperature, to make the temperature very, very low, and not to reach absolute zero.

Is there any way to make the temperature reach true absolute zero?