"Hello everyone, I'm Lin Bingru."

At Wang Feng'an's suggestion, the blue-haired and blue-eyed girl said her name indifferently, and then there was no follow-up.

Seeing this, Wang Fengan couldn't help but shake his head, although the daughter of this old friend, although she is kind-hearted, she is this kind of character......

"Take a seat."

Wang Fengan waved his hand.

"Hmm!"

Lin Bingru nodded, and then sat down on the table and chair that Xu Yao had moved before.

As Lin Bingru sat down on the table and chair at the back of the classroom, everyone present reluctantly withdrew their eyes and turned to Wang Feng'an on the podium.

It's a pity that the other party's seat is at the back, and this turning his head to look behind him seems a little too deliberate.

Teacher Wang doesn't like anyone to talk to him in class, if he displeases Teacher Wang and expel someone, then he will definitely be smoked when he goes back.

In order to let them come here to tutor, the families of those rich children have spent a lot of money, and even used a lot of connections, the price is not small, if they are expelled, the loss will be great.

"Start class!"

After Lin Bingru took a seat, Wang Fengan spoke.

Hearing this, everyone mentioned their spirits, this Teacher Wang's class, which is full of dry goods, I don't know how much better than those teachers in the academy. After the first few lessons, everyone could feel the obvious progress.

"Today, I'll tell you how to condense mana crystals." Wang Feng'an's gaze swept to Xu Yao, who was sitting at the back, and said.

With his strength, it is not difficult to see through Xu Yao's situation at all, not only that none of Xu Yao's present can hide from his eyes.

Wang Feng'an has a very good impression of Xu Yao, in the case of his own very difficult conditions, he can still give up a good salary and choose to audit his class, this kind of heart makes Wang Fengan a little impressed.

Especially Xu Yao actually really brought him some surprises, in such a short period of time, he actually cultivated to the point where he was about to condense mana crystals, although Xu Yao's cultivation speed was not a special genius, but it was already very good.

Such a young man with a good heart and good talent, Wang Fengan doesn't mind mentioning him.

In fact, Xu Yao didn't want to fight like this, but he was in great danger, and he could only work hard to become stronger in order to survive.

Hearing that Wang Feng'an was going to talk about how to condense mana crystals, Xu Yao suddenly perked up, he lacked this now.

"There are generally two ways to condense mana crystals, one is to compress mana into mana crystals by brute force, this method is simple and crude, with a high success rate, and the disadvantage is that it requires very strong mana as support."

"The second way to condense mana crystals is to choose a construction method with a large number of people, use spiritual power to build the shell of mana crystals, and then inject mana into it to fill it up, and you can form mana crystals. The advantage of this method is that there is no requirement for mana, and you can even condense an empty mana crystal first, and then slowly fill it with mana. ”

"But this construction method also has many limitations, first of all, building a complex mana crystal requires strong spiritual power, and secondly, one construction method can only condense one mana crystal, if you want to condense the second one, you need to use other construction methods, otherwise the mana crystals condensed by the same construction method will resonate and cause breaking." Wang Fengan talked eloquently on the podium, he spoke in great detail, and everyone listened very carefully.

Although, except for Xu Yao, everyone else was already familiar with this knowledge, but after Wang Feng'an took out a cultivation map of the construction method, everyone's eyes widened.

As Wang Feng'an said, a construction method can only condense one mana crystal, if you want to condense a new mana crystal, you need a new construction method, and those rich children present naturally have no shortage of construction methods, what they lack is that kind of advanced construction method.

The more advanced the construction method, the stronger the mana crystal will be, the mana crystal is equal to the realm, and the stronger the mana crystal, the more stable the realm.

Only strong mana crystals can withstand the continuous consumption and replenishment of mana, and some fragile mana crystals are likely to shatter due to the impact of mana or some other factors in high-intensity battles.

The number of mana crystals represents a person's realm, and it means that they can use powerful cards of several stars, which is equivalent to falling directly into the realm if the mana crystal is broken. Based on this, advanced construction methods have always been the pursuit of everyone.

Now what Wang Feng'an has come up with is obviously a very good construction method, everyone present has practiced the construction method, and even condensed the mana crystal through the construction method. It is precisely because they have practiced the construction method that they can know more clearly the subtlety of the construction method that Wang Feng'an came up with.

It's no exaggeration to say that this construction method is worth the expensive tuition fees they spend.

"It's ......"

Xu Yao's eyes stared at the cultivation diagram displayed by Wang Feng'an, which was a three-dimensional model like a diamond, and in the model diagram there were countless geometric compositions full of mathematical beauty, and it was these geometric compositions that made up this diamond-like model diagram.

The difficulty of building such a complex three-dimensional model with mental power can be imagined, but if this model diagram is dismantled with the help of some mathematical formulas and theorems he has mastered on Earth, then the difficulty will be greatly reduced.

Thinking of this, Xu Yao did not hesitate to start trying quickly, such an opportunity is very rare, he must analyze and master this construction method as soon as possible, and condense his first mana crystal.

A few hours later, Xu Yao slowly opened his eyes, and at this moment, a brilliant diamond-shaped crystal floated in his sea of consciousness.

"It worked!"

Feeling the brilliant mana crystal in the sea of consciousness, a smile appeared on the corner of Xu Yao's mouth, with the help of those mathematical knowledge he had mastered in his previous life, it was indeed a great reduction in the difficulty of condensing mana crystallization, but there was another hero to this success, that is, Xu Yao's spiritual power as a traverser far beyond ordinary people.

Without this unusual spiritual power, Xu Yao would not have been able to complete the complicated crystal model in one go.

"When this empty mana crystal is filled, I will officially become a 1-star apprentice professional, and I should be a relatively strong ant in the face of that evil professional." The joy of condensing the mana crystal did not last long, as long as he remembered the threat brought by the evil professional, Xu Yao's heart was filled with urgency.

"Huh?"

At the moment when Xu Yao opened his eyes, Wang Feng'an, who was quietly observing everyone on the podium, looked at him slightly, and at that moment he sensed that Xu Yao's mana had condensed from the original chaos to condensed in an instant, which was a sign that the mana had condensed from disorder to mana crystal.

It's just that it's only been a few hours since he came up with the construction method, and this young man has actually succeeded, which is really a bit too unbelievable.