The Growth of the Richest Man

Originally, Xu Lili thought that they had no chance to escape. Although she rested for a night, because she was tired not only yesterday, but also at night, she didn't want to move anymore, and just wanted to spend the rest of her life here quietly with Zhang Yong. But now, Zhang Yong explained to him that not only would they escape, but they could also see aliens or alien spaceships right away! Everyone has some curiosity in their hearts. Driven by curiosity, Xu Lili can take a difficult step and continue to move forward.

Zhang Yong's cell phone was completely out of power and could not be turned on, let alone lighting it up. However, Xu Lili's mobile phone still has about 20% of the power, and it is estimated that it can last for about 2 hours. For more than half a day underground, the eyes of the two people have basically adapted to the dim environment, and they can see more clearly by turning the brightness of the mobile phone flashlight to the lowest level. But even if the brightness of the mobile phone flashlight is turned down, the remaining battery power of the mobile phone is estimated to last for less than 3 hours.

The way down is basically the same as the previous day. It’s still going down in circles, but the way to go today is obviously much shorter than the distance of the previous day. The two only walked for more than an hour. It has reached the edge of a huge arc-shaped metal wall. Is this coming soon?

But their way was obviously blocked by this huge metal wall. Zhang Yong tentatively tried to push the wall to see if he could push it away, but in an instant, the instant of contact, a tingling sensation caused by a huge electric shock made him lean back and almost fainted on the spot. dead past. This metal wall actually has electricity!

Xu Lili hurriedly supported Zhang Yong, which prevented Zhang Yong from falling to the ground. Seeing Zhang Yong rolling his eyes, Xu Lili was startled, "Zhang Er, are you alright? Don't scare me..."

Xu Lili shook Zhang Yong vigorously, pinching Zhang Yong's people. Zhang Yong almost lost consciousness because of the instant powerful current, but he was not dead yet, but if he was shaken like this by Xu Lili, a living person would be shaken and strangled to death! "Cough...cough...cough... I'm fine. I didn't expect this metal wall to have such a strong current. Fortunately, I was wearing thick insulating rubber-soled sneakers, and the shoes were also very dry, otherwise I would be standing barefoot on the ground. , this time the current may kill me."

Seeing that Zhang Yong was all right, Xu Lili was so frightened that she forgot her crying eyes, but she finally began to wonder if it was because she was nervous or whether she cried out of joy: "Zhang Er, if we can't open this wall, we may really die. here."

"Don't say those depressing words, I am the protagonist in an urban novel, how could I die so quickly?" Zhang Yong pouted. After speaking, Zhang Yong adjusted the brightness of the flashlight of his mobile phone to the brightest and began to observe the metal wall.

Looking closely, this metal wall turned out to be not a completely smooth, strong, staggered line of lines and columns, dividing the wall into several square pieces. Inside each small block, there are some bumps, some more, some less. At most, it seems that there are only a dozen or so bumps, few, and some have only one bump... No, the least, there are some lattices, but not a single bump. What does it mean?

"This seems to be a Sudoku question!" Although Zhang Yong didn't see it, Xu Lili already saw it, "When I was studying for a master's degree in the UK a few years ago, my favorite game in my spare time was to play silently in the Sudoku is playing in the dormitory. If one dot is regarded as 1, two dots are regarded as 2, and several dots are regarded as a few, then the grid that is not filled with convex points is exactly the grid that Sudoku needs to fill in numbers!"

"Sudoku? Isn't this a number game? Use the known numbers on the board to deduce the numbers of all remaining spaces. But is there a place to enter the answer? There's electricity there... uh, there's a big rock next to it. There are also many convex points on the table, from 1 to more in order. It seems that this large stone table is used for inputting answers." Zhang Yong thought while searching, and said there, "Then I will take the banknotes. , let's do the math... Uh, I didn't bring a pen and paper, how can I count it!"

Zhang Yong was very helpless. He didn't bring a pen and paper. He used to use his mobile phone to calculate and record, but now, the mobile phone is out of power.

Seeing Zhang Yong's anxious expression like a monkey, Xu Lili smiled slyly: "I'm still there. Although I study economics, mathematics is also a very important subject for economics. My mathematics It’s very powerful, and I especially like Sudoku games. Now this Sudoku problem is not difficult, it’s just an algorithm within 20, which I can do mentally.”

After speaking, Xu Lili started to think quietly, Zhang Yong didn't dare to disturb her at all, and waited quietly by the side~www.wuxiahere.com~ After a few minutes, Xu Lili finally finished the calculation and walked to the side, ready to Press the numbers on the stone table. "No, maybe this stone table also has electricity, let me press it." Zhang Yong said.

Anyone who presses it is actually in danger, but now that he knows there is danger, seeing Zhang Yong's charred face, Xu Lili can't bear to let Zhang Yong take another risk. "Then, we can use a dry backpack, fill it with dirt, and throw the backpack on the numbers. If we don't directly touch the stone table, there should be no electricity."

This is a good idea, both of them are not in danger, just do what they say. Zhang Yong took out the remaining food and water in the backpack, dug up a little soil and put it in the backpack, and threw it on the number designated by Xu Lili.

There was a "ding" sound from the top of the door, the top row of empty grids had already lit up, and the number pressed by the backpack appeared.

Answering the first number correctly, the second number is like a chain reaction, all solved very well. Zhang Yong tentatively kicked the flying backpack, but was not charged again, picked up the backpack, and dropped it on the second number...

Empty spots on the metal wall are constantly lit up, filled with numbers. In total, you only need to fill in 9 positions, and soon, all 9 blank positions will be lit up.

As all the spaces were filled, all the grids on the metal wall lit up, and then flashed a blazing red light. Then, like an earthquake, the metal wall began to slowly descend, and it took about half a minute to completely descend to the ground.

When Zhang Yong and Xu Lili saw the scene behind the door, they exclaimed "Wow" involuntarily.