On Wednesday morning, Hang Yi and his entourage of nine people arrived in Beijing from Congzhou City and went straight to Beijing Railway Station. [To see the latest chapter of this book, please go to the hot 'door'] Han Feng previously booked nine high-end soft sleeper tickets for K3 trains at international travel agencies. The departure time was 11:22 a.m., and I waited in the waiting hall for dozens of minutes to board the train on time.

It's not the peak tourist season, but according to preliminary observations, the 15 cars are almost full. Chinese make up nearly a third, and the rest are Russians, 'Mongolian' ancients and people from other countries. Most of these people are tourists, and the main purpose of traveling by train is to enjoy the beautiful scenery of Lake Baikal, the Siberian plain and the Russian countryside along the way.

Hang Yi and they came to the high-end soft sleeper car - car No. 9. Compared with the hard sleeper car and the ordinary soft sleeper car, the premium soft sleeper car is more spacious and luxurious. The hallways are carpeted, and each small single room has a bunk 'bed' on the left and a sofa on the right. They tried on the 'bed' and the sofa respectively - not comparable to the big hotels, but in terms of travel, it was already very comfortable.

With their luggage in place, they, like other tourists, are ready to enjoy a pleasant trip with their own good moods. Han Feng took out a large pile of snacks and scattered them to everyone; Lu Hua has a new book ready to hit the bestseller list in the United States; Lei Ao plays with the iPad; Xinna and Shufei looked out the window and chatted.

Hang Yi didn't know if he should be so relaxed. But for now, it seems that everything is normal. Even so, he reminded himself not to let his guard down. After a while, the train started.

Before entering Mongolia, the train will pass through Hebei and Shanxi provinces. Perhaps domestic tourists are looking forward to foreign scenery, and in this part of the country, most Chinese are reading books or playing with various electronic devices. Hang Yi sat for a while, intending to take a stroll around the carriage, and when he walked to the seats of Xinna and Shu Fei, he found them chatting happily with a pair of mother and son in the seats next to them.

When Xinna saw Hang Yi coming, she said happily: "We have found a little mathematical genius!" ”

"Really?" Hang Yi looked at the little boy who was lying on the small table with interest, about 7 years old, white and soft, and his appearance was full of wit.

The boy's mother, who was in her thirties, smiled shyly, gently stroked the boy's hair, and said with a proud but not exaggerated tone: "This child was particularly sensitive to numbers when he was three or four years old, and liked to do Olympiad problems, but it can't be said to be a genius, it's too exaggerated." ”

"It's not an exaggeration at all." Xinna took a piece of paper on the small table to Hang Yi, "Look, this is a question that this kid did when he was waiting for the bus just now, and I heard that it only took five minutes to make it." ”

Hang Yi took the white paper and saw that it was written:

Observe the following number series, find out the pattern, and fill in the appropriate number in parentheses according to the pattern:

1,8,27,64，125，，343

The numbers in parentheses have been written in childish handwriting—216.

For adults, this question is not very difficult, but it is amazing that a second-grader can find a pattern and calculate the answer in five minutes. Hang Yi gave a thumbs up to the little boy: "Little friend, it's amazing!" ”

The little boy grinned and continued to work on the question, and his serious look was very cute.

Their conversation attracted Lu Hua behind him, and he closed the book and walked over, equally interested in the boy's mathematical talent. ( Nice cotton 'flower' candy At the same time, he noticed that the little boy frowned, as if he was stumped by the question he was doing.) Lu Hua tilted his head and saw that the question on the paper was like this:

Observe the following number series, find out the pattern, and fill in the appropriate number in parentheses according to the pattern:

1,2,6,24，120，，5040

Mathematics has always been one of Lu Hua's best subjects, and after thinking for a minute, he found the pattern and said to himself: "Oh, so that's it, I know the answer......"

"Don't say it!" The little boy hurriedly stopped Lu Hua, "I want to make it myself, what others say doesn't count!" ”

Lu Hua laughed: "Okay, you do it yourself, you really can't do it, and my brother will tell you the answer." ”

"I'm sure I can do it!" The little boy said confidently, "I don't believe I can't do this problem in seven days!" ”

While encouraging the boy, Lu Hua also whispered to the boy's mother: "I can understand your feelings about wanting to cultivate a child, but I think this question is a little too difficult for a seven-year-old child. ”

The boy's mother explained: "You misunderstood, I didn't ask him this question. Actually, I also thought it was too difficult and told him not to do it, but this child has to be strong in 'sex', and he has to be challenged, and I can't do anything about him. ”

"Oh, you didn't tell him to do it, so who is that?"

The boy heard their conversation, looked up and said, "It was a question from a big sister who was waiting with me just now." When she heard that I liked math, she said that she would test me. If you do it right, you'll be rewarded with a toy! ”

As he spoke, the boy 'touched' a toy car from his 'trousers' bag and proudly showed it to everyone: "This is the first question I did correctly, and the big sister rewarded me." The eldest sister said that as long as I do the current problem correctly, she will reward me with a more "awesome" toy! ”

The boy's mother smiled bitterly: "This child, there is really nothing to do with him." ”

Hang Yi thought this was 'quite funny' and asked, "Which big sister?" ”

The boy raised his hand and pointed at the 'bed' diagonally opposite: "It's this big sister." ”

Hang Yi and the others looked over together, and saw a young 'woman' wearing a pink and purple 'colored' knitted hat half-leaning on the 'bed', holding a book, with her back to them. When she heard the boy's words, she got off the bed, walked up to the boy, and said to him, "Well, that's right, as long as you do this question correctly, the big sister will definitely reward you with a super 'awesome' gift!" ”

After saying this, the young 'woman' raised her head and looked at Hang Yi and them. After Hang Yi, Lu Hua and Shu Fei saw her appearance clearly, they were all stunned.

This person is the superpower of Class 13 - Dong Manni ('female' No. 46).

"Dong Manni? Why are you here? Shu Fei asked in surprise.

"Like you, go to Moscow." Dong Manni said calmly, which shows that she has long known that Hang Yi and the others will appear here.

An uneasy 'yin' cloud suddenly rose in Hang Yi's heart, and he subconsciously felt that the person who came was not good. Lei Ao, Han Feng, Ji Kairui and others also gathered.

The boy's mother sensed that the atmosphere was not right and asked hesitantly, "What...... Do you know? ”

Dong Manni smiled and said, "Yes, we are classmates who tutor together. ”

The boy's mother didn't ask again, but her expression was clearly saying, "Then how can you look at each other like enemies?" Just then, the radio on the train sounded, calling everyone to the dining car for a free lunch.

Dong Manni said to the little boy who was still working on the question seriously: "Little brother, will you do it again in a while?" Don't worry, there's still so much time. Let's go to dinner with your mom first. ”

The little boy seemed to like the big sister very much, and listened to her very much, so he said "um", took his mother's hand, and went to the dining car.

Almost all the people in the carriage went to the third and fourth carriages where the dining car was located. Only Hang Yiyi and Dong Manni were left in the ninth carriage.

"Open the skylight and say something, why are you here?" Ji Kairui didn't have the patience to talk to her, and opened the 'door' to see the mountain.

"Okay, I'm also a cheerful person, and I don't like to twist and pinch." Dong Manni said bluntly, "I am an assassin sent by the Old Gods to kill you. ”

This is probably the first assailant to appear directly and be so blunt. But Hang Yi really couldn't figure out what kind of superpowers she had, which could give her the confidence to dare to face eight superpowers of more than one level at the same time, and be 'confident' and fearless of 'color'.

Ji Kairui squinted his eyes and said, "When I give you five seconds, tell me that you are actually joking." Unless you don't believe I can finish you out in a second. ”

Dong Manni smiled lightly: "Ji Kairui, I know how powerful your ability 'weapon' is. But you can try and see if it hurts me. ”

Before the words fell, Ji Kairui's right hand had turned into a sharp blade, and he stabbed Dong Manni's body with a knife. But there seems to be an invisible protective shield around Dong Manni's body. The blade didn't even make contact with her body before it bounced off.

Lu Hua was stunned: "Could it be that your ability is the same as mine?" ”

"No," said Dong Mannie, geving her fingers, "have you forgotten?" The old gods have said that none of our fifty human abilities are repeated. Besides, with 'defense' alone, I can't settle the eight of you. ”

"Nine." Sina said as she stared at her.

"I guess this pretty girl must be Miss Sinna." Dong Manni said, "I admire your courage very much, but since even Ji Kairui can't hurt me, do you think you, an ordinary person who doesn't even have superpowers, treat me well?" ”

She knows the members of our league inside out. Even including Xina. Hang Yi secretly wondered. We are always in the "light" and they are in the "dark". The biggest disadvantage in this competition.

Dong Manni saw the suspicion and stunned of Hang Yi and the others, she pulled the corner of her mouth and smiled, and said: "Since I dare to directly appear and 'confront' with you, of course I will not be stupid enough to let you stab you to death." Well, now you know that any attack is ineffective against me - including the 'spirit' attack. And I can also tell you clearly that my superpowers are also not capable of direct attacks. So, let's put aside the tension and sit down and talk for a while, shall we? ”

Dong Manni sat on the sofa, her legs folded, and her posture was elegant. Hang Yi and Lu Hua sat across from her, and the others stood around.

Dong Manni said unhurriedly: "I believe you must be very curious about what kind of superpower I have at this moment. I'm not going to sell it, so let me be honest with you - my superpower is 'law'.

"None of your current companions have the same type of superpowers as mine. In fact, out of fifty people, my abilities are quite special. To put it simply, I can make a 'pattern' for a particular occasion – like this train. For a certain period of time, things will develop according to this law.

"Don't think that if you kill me, your superpowers will be lifted automatically - 'find patterns, you can't be brute or cheat' - that's why you can't attack me. As a reminder, once my superpower is activated, I can stay in the superpower state without exerting physical strength for a limited time. ”

"I don't believe it." Sun Yuchen bluntly said, "According to what you say, isn't your ability invincible?" ”

Dong Manni groaned and said, "No, my ability is similar to a gamble. If you find this pattern within the time limit, it will be equivalent to cracking my superpowers. I'm going to die right away. ”

"What if we don't find out?" Shu Fei asked.

"Then all of you will die."

"By 'all' mean the nine of us?"

"No, it's the whole train." Dong Manni said with an indifferent expression.

"What? You are crazy! What does this have to do with the rest of the people on the train? Hang Yi angrily scolded Dong Manni.

"It's not that I want to involve them, it's just that because they're all within my power, the outcome will be the same as yours."

"When the train gets to the next station, I will persuade them all to get off." Hang Yi said, "Don't let ordinary people become the funeral objects of our competition. ”

Dong Manni said: "Hang Yi, don't you still understand? The gamble has already begun, and these people, whether they want it or not, have been forced to participate. From now on, the train will not stop at any of the stations and will go straight to Moscow – and this is the 'time limit' that I have set. ”

"Impossible," Han Feng said, "the train has to change its wheels before leaving the country, because the width of the track in the two countries is different." In addition, when entering the territory of 'Mongolia' and Russia, the carriages are changed twice. ”

"You don't have to worry about these details. My superpowers can solve all the trivial problems. You just need to remember one thing: there is only one way to survive, and that is to find out the 'laws' that I have made. ”

"Then stop talking nonsense and tell us the subject." Ji Kairui said.

"Well, listen up - seven people will die on the train during the seven-day journey. If you can find the pattern of the death of these seven men before the train arrives in Moscow, you will be counted as defeating me; Otherwise, count me as a winner. As I said earlier, the result of failure is that all of you will die. And each of you only has one chance to guess the pattern. ”

Hang Yi's eyes widened and glared at her angrily: "You actually used human life to set up this 'gamble'?" ”

Dong Manni looked at Hang Yi: "Isn't what we have experienced like this?" ”

"Enough, don't talk nonsense with her." Ji Kairui's cold gaze stared at Dong Manni. "I'll tell you in advance, not only will we find this pattern, but we'll also make you die a miserable death."

Facing Ji Kairui's gaze, Dong Manni shuddered a little. But she struggled to keep her composure: "Then let's try it." What this law I have laid down, you will never guess. ”