The Rubik's Cube, also known as the Magic Cube, is actually invented in modern times, and is the most widely circulated educational toy, which can be bought for a few dollars in any children's toy store.

Generally speaking, the simplest Rubik's cube is a three-by-three-by-three three-order Rubik's cube, a six-sided cube, each side is cut into nine pieces, and the color of the six sides is different.

Now many kindergartens and primary schools have introduced this small toy, usually used to exercise children's intelligence, but don't think that twisting the Rubik's Cube is very simple, because if you don't look for a way to blindly twist it, someone has calculated that there are about 400 billion billion possibilities, at the speed of three times per second, it takes about 30 cosmic ages to restore the Rubik's Cube.

The age of a universe is about 13.82 billion years.

When we were children, we used to learn the allusion of Yu Gong moving mountains, there are two big mountains in front of Yu Gong's house to block the road, he is determined to level the mountain, Zhi Suo laughed at him for being too stupid, thinking that Yu Gong could not level the two mountains in his life, Yu Gong said, I have a son when I die, and my son has a grandson when he dies, and there are endless children and grandchildren, so why worry about digging unevenly?

This allusion tells us that we are not afraid of hardships and dangers, perseverance, regardless of whether the children and grandchildren of Yugong will take moving mountains as a mission for generations according to Yugong's will, even if they are moved by the children and grandchildren of Yugong's will, according to the reason, it is indeed possible to flatten the two mountains after tens of thousands of years.

But if you let Yu Gong twist the Rubik's Cube, I am afraid that from the opening of the world to the unity of heaven and earth, from the birth of human beings to the extinction, it is impossible to twist the third-order Rubik's Cube.

Human society has always advocated that all people are born equal, but not everyone is born the same, although most people are born with similar physical quality and intelligence level, but there are still some people who are born stupid, or born to be able to remember and understand things that ordinary people cannot understand.

Modern society is becoming more and more enlightened, especially after students enter the society, the selection of many high-end talents is no longer as honest and down-to-earth as before, some people can not adapt to the difficult equation calculation, some people can not analyze the composition in the brain, some people can not even learn their native language, while some people can be proficient in the eight Chinese languages, and skilled conversion and use, which is an area that ordinary people cannot achieve in a lifetime.

Of course, I'm not that smart.

But as I said before, when I was a child, the school in our town was very chaotic, the teachers couldn't control it during class, the students fought all day long, and after I finished my homework, I basically twisted the Rubik's Cube under the desk, and I didn't go out after class, and my only toy at that time was to twist the Rubik's Cube.

I haven't told Xiao Wu or Lao Guang about this matter, but I didn't expect that the test of Ma Daoshi's selection of apprentices actually included twisting the Rubik's Cube.

Before, I was worried that an old immortal wouldn't be able to apprentice if I casually wanted to, but now his test is to twist the Rubik's Cube, and it is the simplest third-order Rubik's Cube in my opinion, which of course does not bother me.

Modern people are much smarter than the previous people, and people's intelligence level, especially memory, can be improved through acquired training, many primary school students can restore the Rubik's Cube within a minute, sometimes some hot pot restaurants to carry out promotional activities, will also set up a game of twisting the Rubik's Cube at the front desk, who can restore the Rubik's Cube within a minute, you can get a discount coupon.

When I was in college, I went to eat hot pot with my roommate a few times, and I only discounted it by twisting the Rubik's Cube.

But our Zhangjiagou is in the mountains, although the store has been selling Rubik's cubes for many years, but most people don't think it's fun, even if you buy it and twist it for a few days and find that it can't be restored, you will throw it aside and stop playing, even if there is a diagram tutorial how to twist, but the formula is the same as someone looks hard, and reluctantly applies the formula to restore it once, and it will no longer touch.

Seeing that everyone looked at each other, Ma Daoist said: "The Taoist art contains thousands of thousands, Qimen Dunjia, Tianji Mathematics, Calculus and reasoning, Fu Ping and Hehe must be proficient, otherwise everything is not very understanding, learn a fur to draw a talisman to catch ghosts, in the end you can only become a liar god stick, empty of strength, even if you learn a little Taoist kung fu, a bullet down in an instant to see the king of Hades, into my door, I have no time to cultivate a dead man." ”

When Daoist Ma said this, the old bachelor on the side blushed.

"I haven't accepted apprentices in the past hundred years, when I used to assess my disciples, I used Liuhe lock and Jiugong Bagua number machine diagram, the difficulty is only more difficult than this Rubik's Cube, it won't be easy half a point, I only practice it in front of you, learn the rules and count your skills, and it is naturally your luck to apply the formula, who can complete it in twenty seconds, even if it is to apply the formula, you can also directly enter my door."

After Ma Daoist finished speaking, he raised the Rubik's Cube in his hand and twisted it step by step, everyone watched attentively, and Ma Daoist said after twisting it: "Let's start." ”

So those who got the Rubik's Cube all twisted up, many of them had played the Rubik's Cube, and some of them wanted to memorize the steps of Ma Daoist, but while they were still thinking, I raised the Rubik's Cube in my hand.

The old bachelor gasped, looked at Daoist Ma and shouted, "Master......"

"I'll just say that Zhang Yang is fine." Xiao Wu said.

Ma Daoist nodded, and threw me two scrambled Rubik's cubes for me to restore, I was nervous, my fingers flicked, and the two Rubik's cubes were all restored in thirty seconds.

"He is the only college student in our village."

"After all, Zhang Yang is a Yin Immortal, and he has been learning from the old bachelor for a long time."

The villagers began to talk about it.

Ma Daoist picked up an ancient book of mathematics on the table, turned over one of the pages, on it was a number chart, a few of which were empty, to put it bluntly, it was a modern Sudoku map, this thing was very simple, I used to have nothing to do in class to pass the time to play, so I took a look at it and directly said the vacancy.

Ma Taoist saw that I answered quickly, and took out another thing, is a six-sided machine bracket lock, I have seen the description of this machine bracket lock in the "Maoshan One Hundred and Eight Methods", it is just Ma Daoist said that the six-fold lock, also called Luban lock, its principle and the Rubik's cube is actually similar, but the Rubik's cube is twisted, and it is drawn, I found out the way after a while, the six-fold lock to open.

The villagers didn't know what was going on, but Xiao Wu and the old bachelor were stunned.

"Providence." Daoist Ma spoke, turned around and went up the mountain. "Little Wu, let him bathe and fast tomorrow and come to worship the ancestor."

"Yes, Master Taizu!" Xiao Wu said excitedly.

At that time, I had mixed feelings in my heart, thinking that I Zhang Yang studied well in elementary school, worked hard for so many years, and after graduation, I was looking for a job several times either because of regional problems, or because I had no work experience, people didn't want me, or the nephew of the leader took the position that should have belonged to me, and I was forced to give up my dream and go home to raise pigs.

I never thought that I had learned so much scientific knowledge and that it would be perfectly displayed in feudal superstition.

For a while, I felt a little ironic.

That night, Xiao Wu sent a plain robe, and asked me to only drink water at night and not eat, and the old bachelor taught me the etiquette of worshipping the ancestors, so the next morning, I took a bath and changed into a robe and came to the foot of the mountain, but I saw that the old bachelor was already waiting.

"Old bachelor, why do you get up so early?" I asked.

"There is another thing I forgot to tell you, after arriving at the foot of the mountain, you have to take three steps and kneel on the pilgrimage road, and our master's identity is extraordinary." The old bachelor said.

I was reluctant, but I couldn't show it, and just as I was about to kneel all the way up, the voice of Ma Daoist came from the mountain: "No need, come up directly." ”

So I went up to Nanshan with the old bachelor, and when I arrived at the door of the Taoist temple, I saw Ma Daoist sitting on a Taishi chair, and Xiao Wu was standing beside him.

Xiao Wu asked me to write my name and birth date on a wooden plaque, and then said: "Zhang Yang, your name has entered the sect of Taishi Ancestor, and you can apprentice." ”

I made the whole robe, knelt and kowtowed three times, each kneeling would take something from Xiao Wu's hand and pass it in front of Ma Daoist's eyes, the first kneeling was a peachwood sword, the second kneeling was a gold leaf talisman, and the third kneeling was a bowl of water.

After kneeling three times and bowing nine times, Xiao Wu began to read to me the rules of entering the Taoist Gate, and it was then that I knew that worshipping into the door of Ma Taoist was not to worship Maoshan Mountain, but to worship Taiyin Temple.

At that time, I didn't know what the three words "Taiyin Guan" meant.

But I knew I wanted to quit as soon as I started.

Because Ma Wuwei, this old miscellaneous hair, made me kneel at the door for three days.