Castle of Black Iron

"The last lesson I gave you today is also the last lesson before I retire. After you finish this lesson, I will officially retired..." At the beginning of the second natural history lesson, the naturalist teacher said His first sentence immediately plunged the entire classroom into absolute silence. Even Zhang Tie didn’t expect that today’s class would be the last class of this teacher. Since entering the seventh middle school, he seems I'm used to this old man with completely gray hair coming quietly during class, and walking quietly after class. I never thought that one day this old man would say goodbye to everyone on the podium. The teacher of the natural history class said, Even the guys in the classroom who were still immersed in sleep to make up for their doze seemed to wake up, looking at the old man in front of them in amazement. At first I felt a little sad.

"Teacher, you really want to leave..." a guy in the front row asked everyone what they wanted.

"I'm old enough, and I've served Heiyan City long enough, it's time to retire!" The old man on the podium smiled kindly, "I know what everyone is worried about, as long as Heiyan The walls of the city will not be broken by foreign races. My pension should be enough for me to live in my old age. If the walls of Heiyan City are to be strong forever, it depends on you, not me, so the teacher will have a future retirement life. How about it, I only ask everyone! For this reason, in the last natural history lesson of today, I will use my lifetime experience and insights to tell you about the issues that everyone cares most about, a strong person who can protect the human race. What's the way of the leader!"

The old man's last words shocked everyone, and everyone straightened their waists suddenly, looking at the old man who suddenly made everyone feel resentful and respectable.

The old man did not speak, but took out a small ordinary snail shell and two pine cones from his pocket, and sent them down from the front row for everyone to pass it through. In a minute, two ordinary things were taken from It was passed from top to bottom in everyone's hands. There was nothing special at all. Zhang Tie held the two things in his hand and looked at it for a few seconds, but didn't see anything famous.

"Did you find anything special about this snail shell and these two pine cones?" the old man asked.

Everyone shook their heads.

"Do you know that the mystery of a human being's advancement path is hidden in these ordinary things? You all know that a person can continuously improve his strength as long as he keeps igniting the bright spots of his body, but a human warrior What is the standard for the division of strength? Why are some people at level 5, some at level 6, some are at level 7, and some are at level 10 or higher? Who gave us the human race? Did some big figures in the Warriors Guild figure out the ranks and ranks of the fighters by patting their foreheads?"

Zhang Tie was also stunned. In the past, Zhang Tie really thought that these standards were made by the big men, didn't they?

"Of course not. In this world, who has the right to formulate such a standard so that hundreds of millions of people and the powerful people who emerge in an endless stream will obediently follow it?"

"Teacher, who is the person who made this standard?"

"It is not people who set this standard, but God or the great universal law!"

The animals in the entire class were in an uproar and talked a lot.

"This standard is not specifically formulated for the human race, but the law of the universe is formulated for everything in the universe. The snail shell and pine cone that I just handed to you also contains such a standard, but everyone has not discovered it. !" The old man stood on the podium and finished speaking, then turned around and drew two patterns with chalk on the blackboard. One pattern is a spiral curve shaped like a snail shell, and the other pattern is a cross similar to pine cones. Lines.

After finishing these paintings, the old man turned around, "How many bright spots of the body should the first-order soldiers light up?"

"One, just ignite the bright spot of the shrine..." Everyone answered a question. Then the old man drew a square at the center of the curve of the snail shell, and let the spiral curve pass through the two diagonal corners of the square from the beginning...

"What about the second order"

"It's still one, just ignite the bright spot of the tail spine..."

The old man expanded the icon again and drew a square with the same length.

"What about Tier 3?"

"It's fine to light 2 bright spots on the spine!"

This time, the unit of the side length of the square wrapped by the curve was doubled.

"What about Tier 4?"

"Three!"

"What about Tier 5?"

"5"

"How about Tier Six?"

"8……"

As the old man asked each time, the spiral curve on the blackboard was wrapped in various squares with side lengths increasing in the same proportion. In the end, when the old man asked about the tenth order, there was no more in the class. One person can answer that the world of warriors above the tenth rank has completely exceeded the limit that the animals can look up to. That world, for everyone, is as far away as the catastrophe...

The natural science teacher did not laugh at everyone, but wrote a series of numbers that everyone just answered on the blackboard-1, 1, 2, 3, 5, 8, 13, 21, 34... Then write under the numbers The corresponding level and rank position, starting from the first 1 corresponding to the first level, to the 34 corresponding to the ninth level, and finally turned to look at everyone with piercing eyes, "Don’t you find that these represent the level of being ignited? Is there a pattern in the number of bright points?"

After staring at the row of numbers for a while, someone finally realized, "Teacher, the next number in this row is the sum of the previous two numbers!"

"anything else?"

Zhang Tie looked at the series, there was something in his mind that wanted to come out, but he couldn't catch it.

"You calculate the quotient of two adjacent numbers among these numbers, and then see what the law is?"

The animals who have a certain mathematical foundation in the guest hall just bury their heads on their desks and calculate. The quotient of the first one is 1, the quotient of the second is 0.5, and the quotient of the third is an infinite cycle number of 0.66666. , The quotient of the fourth is 0.6, the quotient of the fifth is 0.625, the quotient of the sixth is 0.61538......, the quotient of the seventh is 0.619047......, the quotient of the eighth is 0.617647......

"Have you found that these values ​​are finally approaching infinitely close to the golden number of 0.618..." The old man explained the mystery, and everyone realized that, yes, why is it so.

"The bright spot of the shrine is 1, and the human spine has 34 segments. Starting from the shrine, when all bright spots on the spine have been lit, it is also a sign of becoming a 9th-level fighter. There are strict standards. Knowing this rule, you can calculate the number of bright spots that need to be ignited to become a Tier 10 fighter? Is 55? Isn't it? Then? Isn't 89? Isn't it? It will become more horrible, it is simply increasing in geometric progression. This is the reason why the difference in level and rank is greater, and the disparity in strength increases. And this series of numbers..." The old man turned around and pointed to the one written on the blackboard. A sequence of numbers, "called the Fibonacci sequence, is a golden sequence of mysteries hidden by human mathematicians hundreds of years before the cataclysm. It contains the laws of the universe and creation. Look at the two pine Count the spirals on the left and right of the fruit. Do the small pine cones have five on the left and eight on the right, while the larger one has eight on the left and 13 on the right, 5, 8, 13, Are these three numbers within the Fibonacci sequence? I drew the curve of the snail shell that you just saw on the blackboard. You only need to look at the squares on the curve of the snail shell to understand this. The relationship between the curve and this series of numbers. This curve is called the Fibonacci curve, also called the golden curve. It is the geometric expression of this series. This golden series and the golden curve can be found in almost any organism. Correspondingly, if you pay attention to the nature and the things around you, you will have more discoveries. You can observe the sunflower disk. There are also two sets of spirals, 34 and 55, 55 and 89 or 89 and 144. A group of numbers, everyone will have the same discovery on plants such as rose flowers and thistle leaves. After the cataclysm, mankind discovered the mystery of human practice in the remains unearthed from the underground world, and the progress and practice of mankind The road is advancing along such a golden curve and number sequence drawn by the Creator. All living things are advancing along this curve. This curve and number sequence are the embodiment of the laws of the universe, so Only the ranks of fighters divided by this curve and series can be recognized by all races and all powerful..."

All the animals had an eye-opening feeling when they heard it. Zhang Tie included. Before, he only understood that in order to advance, he had to constantly ignite the bright spots of his body, and the number of bright spots needed to ignite each step position. It's also different, but why on earth he didn't think about it carefully. It turns out that all the secrets of this are hidden in the golden spiral and the laws of the universe contained in the sequence of numbers.

"Teacher, after the tenth level, what is the highest level of practice?" Baghdad indeed raised his hand and asked a question below.

"This question, no one can answer this question so far, because the practice after the tenth level is the greatest secret anywhere, and the knowledge after the tenth level is the secret in the secret. The greater The reason is that the golden sequence has no end. It is only approaching in constant expansion, constantly approaching the 0.618 that represents the most perfect law of God and the universe. Mankind re-emerged on the path of cultivation and stepped on the gold. Spiral, the history of re-digging the treasure of one's own body is less than 900 years old, and the evolution of the universe may have been tens of billions of years. The journey on that golden spiral has just begun. Before the cataclysm, Human beings have always been blind and arrogant, taking themselves as the masters of the universe and all things, but after the cataclysm, human beings understand that the so-called human race is just a trivial member of the universe and the countless ethnic groups on the Kun Ang continent, and it is even possible. For a long period of time before the cataclysm, the human body and civilization level were not evolving, but degrading. When humans were unable to retreat, the cataclysm and the star of God came, and everything was rewritten for To survive, mankind has discovered the mystery of the bright spots of the body, and has restarted on the path of evolution. The Age of Dark Iron is the last end and a new beginning..."

In this last natural history lesson, the instructor opened a window for everyone to see a wider world that no one had ever thought of. At the end of the course, everyone manually calculated which step they would go to after the golden sequence--

1,1,2,3,5,8,13,21,34,55,89,144,233,377,610,987,1597……

Zhang Tie was dumbfounded when he pushed the golden sequence to the seventeenth place. He looked at the seven numbers behind him with a bit of disbelief. Is this the world after level ten...

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