In the small conference room, after Li Jiankun greeted the international students, he knew that they were very curious about the purpose of their trip. After gesturing for them to sit down along the oval red lacquered conference table, he tapped the small blackboard and said loudly:"As you can see, this is the most common card game in Las Vegas casinos, commonly known as blackjack, also known as black jacket."You can take a look at its rules first and use your mathematician brains to think about it and see if you have any ideas."Li Jiankun walked away from the small blackboard to give everyone a broader and clearer view.The international students, including Wu Yingxiong, carefully read the content on the small blackboard, which introduced in great detail the popular blackjack playing method in Las Vegas.It is worth mentioning that, depending on different regions, different casinos, and changes in the times, the gameplay of blackjack cards is different, and there are many variations.There are currently two types of blackjack card games in Las Vegas casinos. One is that there is no fixed dealer, the dealer is only responsible for dealing the cards, and the casino charges a table fee for each game. To put it bluntly, this game is played by players.This was exactly what Li Jiankun played with Lei Baobao last time.But this kind of gameplay was not part of his plan this time.The other is similar to the more common gameplay in later generations. The dealer in the casino acts as the banker. Only the banker can hold a hidden card, or hole card, and all other players have their revealed cards and bet with the banker.This is exactly what Li Jiankun wrote on the small blackboard.The rules are relatively complicated, but even if you read them carefully, most people can understand them. simply put:The game is played by two to seven people, using the other 52 cards in a deck of cards excluding the big and small kings.The goal of the game is to make the sum of the cards in your hand as close to 21 as possible, but not more than 21. If it exceeds , it is called a "bust" and you will lose the round of the game directly.The card points in the game are calculated as follows:Cards from 2 to 10 are calculated based on the card value.Flower cards J, Q, and K all count as 10 points.Ace counts as either 1 point or 11 points.Then the players follow the rules and make their card points as close to or equal to 21 as possible by asking for cards, suspending cards, etc. Finally, when all players stop asking for cards, compared with the dealer, if the number of points is small, they lose to the dealer's chips. , the one with the bigger points wins the chips from the dealer.Not to mention the mathematicians present, even Wu Yingxiong could understand it at a glance.Everyone immediately thought about what Li Jiankun said just now: Use your mathematician brains to think carefully and see if you have any ideas.Ideas abounded all of a sudden."Such a rule is clearly beneficial to bookmakers.""Indeed. But with only fifty-two cards from a deck of cards, if seven people play at the same time, the cards will be consumed very quickly, and the more exposed cards there are, the less likely it is that the dealer will have a hole card. In fact... you can gradually Extrapolate.”"The key is to memorize the cards. There are only fifty-two cards, so it's not difficult to memorize them.""There is a probability issue here. Every time a card is revealed, the guess of the dealer's hole card and the probability analysis of the points you may get on the next card will be more accurate.""If you use mathematics to make rational calculations, even if you can't be very precise, that is, you know the dealer's hole card and the next card you want to get, but a vague estimate can improve your timely stop loss by at least a few percentage points. Or a chance of winning.”Clap clap clap!Li Jiankun listened to their discussion and applauded.To play this kind of digital game, you have to be a mathematician. You have to be a mathematician to talk or not. This is really a professional counterpart.His inspiration came from a true story he heard in his previous life. There was a Chinese mathematician who used mathematical knowledge to sweep through all the major casinos in the United States.That would have been the nineties.Later, this story was even released into a Hollywood movie called "Blackjack".He thought: Since other mathematicians can do it, why not convene a group of mathematicians?At present, the situation seems to be very good, and he hasn't said anything yet. These foreign student mathematicians have already figured out many ways to improve the winning rate, including card recording, calculation, statistical probability... It feels particularly reliable.Li Jiankun's applause also interrupted everyone's discussion. Someone asked in surprise: "You want us to help you gamble?"In particular, the faces of several foreign student girls clearly showed rejection."First of all, you must understand that gambling is completely legal in Nevada. Secondly, I am not asking you to gamble. You just need to assist me and serve as my adviser, and I will gamble." Li Jiankun said.One girl stuck out her tongue and whispered, "Isn't that the same thing?"They eventually got involved in gambling."It's not forced." Li Jiankun added, "It's completely voluntary. As I asked the hero to tell you, as long as everyone comes here, they will be paid. Those who are willing to help me will definitely be paid higher. The bosses will be satisfied. .”He said, looking towards the door of the conference room.Liu Jingyan stepped forward, took off the Hermès leather bag from her right shoulder, placed it on the conference table, glanced around and asked, "Who are not willing to continue?"The international students looked at her actions in surprise. Are they prepared to pay? You really don’t have to do anything, just come over and be paid, five thousand dollars?A girl weakly raised her hand, looked at Wu Yingxiong, and said apologetically: "Little Brother Wu, I'm sorry, I really don't want to participate in gambling.""It doesn't matter. Didn't my brother say it? It's all voluntary." Wu Yingxiong smiled slightly.Liu Jingyan took out a stack of brand-new Franklins from her bag. In the shocked eyes of the international students, she didn't even count them. She estimated that they should be divided into two parts. Then she walked to the girl who spoke and handed half of them to her. .The girl was stunned and took it: "Thank you, thank you sister."Afterwards, several more girls raised their hands one after another, and Liu Jingyan distributed money to them one by one in the same way.There was only the last girl left in the field who was motionless. Her name was Ji Jingya. She had a master's degree in mathematics from the Massachusetts Institute of Technology and a minor in astrophysics. She came from Tsinghua University and came to the United States on the same flight as Wu Yingxiong in 1979.Wu Yingxiong saw her biting her red lips lightly and said with a smile: "Jingya, don't force it.""It's not forceful. I want to make more money. You know, my brain is not bright enough and I can only memorize some things. When I chose these two majors over my own abilities, I felt that success was far away. This job It seems to suit me quite well, my only advantage is probably that my memory is not bad."Ji Jingya said, turning to look at Li Jiankun, "Brother Li, I have only one question. I heard that Las Vegas is very chaotic. If we really want to help you win money in the casino, can you ensure our safety? "Wu Yingxiong thinks she is too modest. Is her memory just okay? This is a ruthless man who can memorize the Oxford Dictionary.It is precisely because he knows such a group of people that Wu Yingxiong always feels ashamed every time he is praised for his genius.Other international students are also concerned about Ji Jingya's problem."Actually, you are worrying too much. Although Las Vegas is chaotic, these casinos are open for business. If a customer wins money but encounters an accident, this will have a greater impact on the casino's business than anything else. Let me answer your question directly. The question is, yes, I can 100% ensure your safety. Let me tell you frankly, my real purpose is to open a casino hotel here, and I have already established connections between the local black and white."