The thought of wearing Mithril armor and holding an Argan knife made Pan Long's heart burn.

He waited for a day, didn't wait for any new news, and after discussing it with Tang Jingzhe and others, he asked them to collect intelligence and discuss the next course of action, and he rode the wind and flew in the direction of the East China Sea.

Anyway, his main task as a wind watcher is to break the ice and solve those thorny problems for the wind patrol envoys, and under normal circumstances, he is not needed to come forward at all.

Watching Pan Long fly away, Tang Jingzhe couldn't help but smile and said: "After all, our wind watcher is from the rivers and lakes, although he is walking straight and is a good man who stands up to the sky, but he is indeed not very suitable for letting him do those bits and pieces of work." ”

"Alas, if I didn't have a choice, I also wanted the Prancing Horse to be happy and revenge, I also wanted to ride the wind and chase the sun, and I didn't want to work hard!" Shang Man sighed.

Even Liu Yunqing nodded in agreement and said, "Me too." ”

Tang Jingzhe was a little speechless, as a person who was born in the literati system and had been engaged in traditional bureaucratic work for a long time, he and his three colleagues who were full of heroic atmosphere did not have much in common.

Pan Long rode the wind and flew until the evening in one breath, and finally flew to the isolated island where the World Outer Building was located.

Before he entered the World Outer Building, Lan Lingqing had already appeared in front of him.

"You've come just in time. Lan Ling said, "Bi Xiaoniao failed in his retreat and is depressed. You go and persuade her, it's better to give her a make-up lesson. ”

Pan Long was taken aback - the retreat failed?! Wouldn't that be bad!

According to his impression, retreat and cultivation are a matter of both opportunities and risks, and although there are great benefits to successful cultivation, failure in cultivation often leads to heavy losses.

The most common situation is to go crazy.

The severity of the madness also varies, the lighter ones are nothing more than vomiting blood, internal injuries, and recuperating for ten days and half a month, and the heavier ones are ...... Anyway, in Dingfeng Town, there were more than one person who failed to practice internal strength in retreat and died in the retreat room, or died after coming out and confessed a few words after he came out.

For example, his friend Han Feng, there is more than one elder in the family who died like this.

The Han family's internal strength is not perfect, and there is no problem with normal cultivation, but if you want to break through the barrier and do not have the assistance of a suitable elixir, you can only solve it through retreat.

He didn't know exactly what was going on. However, it is not uncommon for the masters of the Han family to fail in retreat and die.

In fact, not to mention the Han family, even the Pan family, there are many examples of failed retreats and deaths. Two of the elders of his grandfather's generation died after failing to retreat and suffering severe internal injuries.

This is the case with internal cultivation, so everyone wants to get a good inheritance in order to avoid this uncertain risk.

Teacher Bi Lingkong's retreat failed to impact the Immortal Buddha realm, and I am afraid that he will also be seriously injured!

He entered the World Outer Building anxiously, only to see the teacher sitting in the open space outside the bamboo building, holding a large pot of fruit, eating so much that his head was almost buried in the fruit pile.

"Look who's coming. Lan Ling said.

Bi Lingkong raised his head, his face covered with fruit peel juice.

It looks embarrassing, but it is very healthy, and the breath is calm and stable, and there is no internal injury.

"Teacher?" Pan Long couldn't help but ask, "I heard that you failed your retreat......

Bi Lingkong immediately showed an aggrieved expression: "Those things you talked about are too difficult! I've thought about it for a long, long time, but I still can't figure it out!"

Pan Long was stunned for a moment and asked, "I remember...... You chose Elimination, Downgrade, and Split Factor...... This kind of it, this kind of ...... What's the difficulty?"

"All!" replied in a second.

Pan Long was a little speechless - these things, even in the world of the previous life, were nothing more than junior high school math things!

"That'...... What do you think is right for you?" he asked.

Bi Lingkong thought for a while and said: "I like the kind that is simple and understandable, it doesn't matter if the content is more, in terms of memory, I am still very confident." ”

Pan Long frowned.

Something simple and clear, the predecessors of the Kyushu world have already discovered it.

How could she toss something different enough for her to open up the path to immortality?

"Let me think again. ”

So he lived in his own room in the bamboo building, closed the door, took out a pen and paper, and began to organize his thoughts.

First of all, all those who need to use mathematical knowledge above the ordinary four arithmetic will be rejected.

He pondered his teacher's level of mathematics, which was probably able to calculate addition, subtraction, multiplication, and division, and he might not be able to set unknown sequences of equations.

Well, it's not a big problem to just add, subtract, multiply and divide......

It's not a big problem!

Not to mention modern physics, the ancient Greek Diophantine diagram is already unknown!

They are people from the Three Kingdoms to the Western Jin Dynasty!

Wait, the teacher is a Confucian disciple, respects Lu Fuzi as a teacher, and Zhongyou, Ran You and others are the same disciples...... In this way, she can probably benchmark against those characters in the era of Greek mythology - in another world, the establishment of Confucianism is in the time period of 500 BC, and if it is compared to ancient Greece, it is probably the time point when a postscript story takes place.

In 490 BC, the Greeks fended off the Persian invasion in Marathon, and legend has it that the ghost of Theseus, a hero who had been deceased for many years, appeared and participated in the war and helped the Greeks to victory.

After the war, Athenian scholars found an ancient tomb and believed it to be the tomb of Theseus. They ceremoniously welcomed the remains of the tomb back to Athens for burial...... At this point in time, it is probably not far from Confucius traveling around the world and being trapped in Chen and Cai.

Thinking about it this way, it is understandable that the teacher, as the last descendant of the mythological era, is a little worse at mathematics.

Pan Long sighed deeply...... Let's just take it as it is.

Since the teacher can only add, subtract, multiply and divide, he thinks of some tricks outside of mathematics.

Physics is out of play, let's toss chemistry.

People in this world have come up with the concept of "elements", which is introduced in the textbooks of orthodox official studies.

At the beginning of the world, there was nothing, and then it came into existence out of nothing, which is the root of everything, the initial "being" was chaotic and then gradually differentiated into yin and yang, and the combination of yin and yang gave birth to various basic concepts, which influenced and combined with each other to form basic elements.

Everything in the world is composed of basic elements combined in different quantities according to different rules.

From stars to gravel, birds, beasts, insects, fish, people or monsters...... It's all true.

At the beginning, Zhao Sheng and Wen Chao proposed a "list of elements", in which there were a total of 32 definite elements and 16 uncertain elements...... Later, after the research of scholars, six of the sixteen uncertain elements have been proved one after another, which is the accumulation of thousands of years.

But Zhao Sheng and Wen Chao, two liberal arts students, can guide future generations to this extent.

Compared to the other world, they are roughly on the same level as Lavoisier, the chemist who ended up guillotining.

This is naturally remarkable, but to be honest, two twenty-first century people can only go so far, in Pan Long's opinion, it is a bit embarrassing.

I don't ask you to toss any spectral analysis, you have even forgotten about the electrolysis method!

Thinking of this, he had a bottom in his heart.

The teacher's math is poor, it doesn't matter, she can get some ready-made.

For example, the "invention" of chemical batteries such as voltaic stacks can fuse natural electricity with artificial electricity, and by the way, a series of process technologies such as electrolysis and electroplating can also be obtained.

As for the lack of sufficient knowledge of chemistry, it cannot be explained...... Being able to propose these technical routes is enough in itself to open up the road to immortality. Explaining in detail is just icing on the cake.

The only problem is that all of these studies have to rely on experiments, which are not only costly, but also dangerous.

In another world, David, a chemist who discovered a variety of chemical elements by electrolysis, was poisoned by electrolysis gas.

Fortunately, the teacher is not short of money and is not afraid of drugs.

Thinking about it this way, it seems that this road ...... It's really suitable for her!