"What is it?" Qian Yang really didn't know what Lao Dingtou was talking about.

The old man cleared his throat and said slowly, "You said it in your book, right?

"Ah, there is such a thing!" Qian Yang nodded.

Lao Ding Tou continued: "Those two black stones of yours are the new field stones from the mouth of the warehouse, and the warehouse is the most notorious garbage heap in the entire Western Wilderness!"

Qian Yang shook his head: "How should this new field be divided from the old field?"

Lao Ding stroked his beard and squinted at Qian Yang: "What's the matter?"

"Well, I want to learn!" Qian Yang nodded vigorously.

Lao Ding Tou smiled lightly: "Then will you compete with me in the future?"

"Uh......" Qian Yangxin said, he was waiting for me here.

"Will you listen to what I say in the future?" asked the old man again.

Qian Yang felt as if his chest was blocked by something.

"If you don't speak, I'll leave?" the old man got up and wanted to leave.

"I ......" Qian Yang's face was full of confusion.

"What the hell is going on?"

Qian Yang was convinced, and said in his heart that this person is a lot older, why is his mind so unopen-minded? Why can't he think about it so much, and always want to take someone for everything?

Okay, old boy, I'll let you do it, right?

"Master, look at what you said, the apprentices will definitely listen to you! If you have anything in the future, you will tell you, and the apprentice will not dare to discount it at all!" Qian Yang patted his chest and promised.

Lao Ding Tou was happy now, although he also knew that Qian Yang didn't have the slightest sincerity in what he said, but isn't this what he wants! It doesn't matter if you don't accept it in your heart, just accept it.

"Okay! Come to my house, I'll tell you about the rough stone today!" Old Ding Tou obviously felt a little happy, and happily returned to the house.

Qian Yang pouted at the back of the old Dingtou and followed in.

Lao Dingtou was in a good mood and was quite interested, and began to explain the scene of the spirit stone to Qian Yang in detail. And Qian Yang's thirst for knowledge has always been strong, especially when he encounters a field he doesn't know at all. Of course, he will not miss this rare opportunity to prick up his ears and obediently listen to the teacher's lecture.

After getting along for many days, it was not until today that the two got along harmoniously for the first time, and the previous stumbling and discord were finally put aside by them temporarily.

Lao Dingtou talked eloquently, from dawn to sunset, and told the scene of the spirit stone one by one.

Speaking of the field of spirit stones, we have to mention the causes of spirit stones, and when it comes to the causes of spirit stones, it must not be able to bypass the prehistoric catastrophe!

Millions of years ago, the catastrophe erupted without warning, mercilessly annihilating the previous civilization. And after the catastrophe, the rules of the whole world have also undergone subversive changes.

For the previous civilization, the monks of the present day could not know much, even if they got some information from the prehistoric records that were accidentally discovered, but everything was like seeing flowers in the fog and peeking at the leopard.

But even so, there is one thing that is recognized by monks today, that is, in prehistoric civilizations, there was absolutely no heaven and earth aura, and the generation of heaven and earth aura should have occurred when the catastrophe broke out.

No one can figure out the relationship between the generation of aura and the calamity, people only know that the moment the calamity erupts, the rules of the whole world are changed. It's like if the world runs on a heart, then, at the moment of the catastrophe, this heart was secretly replaced......

After the catastrophe, the aura was born and the environment changed dramatically. The growth of all things follows a new set of rules, and the core of this new set of rules is Reiki!

In the process of establishing new rules, certain substances, in certain special environments, began a magical and long journey of absorbing and storing aura.

This specific substance is talking about certain types of stones, and this special environment is talking about the Western Wilderness, and this kind of stone that stores spiritual energy in the Western Wilderness is the spiritual stone that the monks rely on to survive!

The formation process of spirit stones is extremely long, and it needs to be calculated in millions of years. And because of the differences in categories and specific environments, the quality of spirit stones from different origins is also very different.

Compared to the lengthy growth process of the spirit stone, the history of the cultivator is much shorter, and there are only more than 100,000 years of real records. The cultivator accidentally discovered the secret of the spirit stone, and began the mining process that continues to this day.

However, in the process of excavation, the monks found that the quality of the spirit stone rough stones in some places was obviously not high, and even if they were excavated, their value was quite limited, so naturally, the monks gathered in those areas with a large number of high-quality spirit stones to mine.

Time flies, the development momentum of the Tian Yuan Continent is rapid, I don't know when it began, the production of spirit stones in these high-quality regions gradually became insufficient to support the consumption of the monks, so the monks had to retreat and reopen some slightly inferior quality fields to supplement the gap in the consumption of spirit stones.

Those that were first developed, with high yield and good quality, were usually called old ones by the monks, and those newly opened ones with poor quality were correspondingly called new ones.

Generally speaking, the overall quality of the old field stone is much better than that of the new field stone, while the probability of the new field stone being able to solve high-quality spirit stones is much lower.

"So that's the case!" Qian Yang's heart was like seeing the sun through the clouds, the clouds were scattered and the moon was bright, and most of the doubts that had been lying in his heart were solved by Lao Dingtou's words.

Lao Dingtou talked about it unabated, and continued: "In the Western Wilderness, there are a total of thirty-two recognized Laochangkou, which are now controlled by the hands of thirty-two sects, and they are all named after the sects to which they belong. The stones produced at these sites vary, but they are all of good quality. ”

"As for the number of new fields, it is difficult to count, some people dig for a while today, and dig for a while tomorrow, and the stones dug out are strange, and the quality is even more uneven. However, there are only dozens of common new field stones on the market, some are not bad, some are not very valuable, and you will be deceived a lot in the future, so you will slowly remember it!"

Qian Yang's face darkened, and he said in his heart, how many times do you plan to let me be deceived?

"Then master, what did you just say?" Qian Yang pretended to be a good baby and raised his hand to ask.

Lao Ding Tou rubbed the corners of his eyes, as if he was a little tired: "The warehouse is a new mine with extremely high output, but unfortunately the quality of the stones there is not high. However, there is a very commendable place in the warehouse, that is, the black skin stone produced there sells very well, and there is almost no difference from the black sand skin of the old field from the appearance, and it is definitely a fool to deceive the stupid boy!"

"So my two black stones are fakes from the warehouse?" Qian Yang's eyes widened.

"How can you call it a fake?" Lao Ding Tou said unhurriedly: "It's not that the Cang Stone will never be able to open a good spirit stone, it's just that the probability is lower, but if you want to buy it as an old field stone, it will definitely not be cost-effective." ”

"And what about my yellow stone, which is also a new field stone?" Qian Yang asked again.

Old Ding Tou shook his head: "That's not it." ”

"Oh?" Qian Yang was stunned.

Lao Dingtou squinted his eyes, as if recalling the appearance of the stone, and said after a while: "If you are not mistaken, that stone should be the yellow sand skin from the Bazhenmen mine, and it is the old field stone of the Eight Classics." ”

"But, why didn't anything come out?" Qian Yang was puzzled.

Lao Ding Tou smiled and shook his head: "Have you heard of a sentence called ten gambles and nine throws?"

"What do you mean?" Qian Yang said cleanly.

"That is to say, if you bet on ten stones, nine of them will be thrown away, even if it is an old field stone, it is not surprising that you can't open a spirit stone. The old man said lightly.

"It turns out that the probability of gambling is so low?" Qian Yang was a little inexplicably disappointed.

"That's right! How many people's eyes did you have to pass through from the time the rough stone was mined until you saw him? And which of these people was given for nothing? If a stone obviously has a high chance of gambling up, do you think it can wait for you to solve it?" said the old man with a smile.

"Understood, the stone itself is fine, it's just that I'm unlucky and didn't catch up with that one-tenth chance!" Qian Yang seemed to understand.

"That's pretty much what it means!" the old man nodded.

"That means that I can buy that stone, right?" Qian Yang was obviously worried about his wrongdoing, and he never forgot to find some placebos for himself.

"No problem?" Old Ding's beard trembled with anger: "It's a big problem!"

"Why? Didn't you say that the stone was fine?" Qian Yang was already in a mess.

Lao Ding Tou sighed: "How much did you spend on that stone?"

"Two thousand!" Qian Yang stiffened his neck.

The old man asked again, "Do you think it's expensive?"

Qian Yang frowned: "I think it's okay! As long as I can open a high-grade spirit stone inside, I can earn eight thousand, and if I can open two, I can earn eighteen thousand, it's very tempting!"

Old Ding Tou smiled bitterly and shook his head: "That's not how the account is calculated!"

"How do you calculate that?" asked Qian Yang.

Lao Ding Tou rubbed his eyes and barely cheered up: "Let's suppose it, there is a ninety percent chance that that stone will not be able to open anything, and among the remaining ten percent, half of it may open a high-grade spirit stone, and half of it may produce two high-grade spirit stones, how much do you think this stone is worth?"

Qian Yang was stunned, and then reacted: You test my math problems? I admit that you are better than me in gambling on stones, but who am I afraid of in mathematics?

Isn't this just a problem that elementary school students can do! Calculating expectations? It's really not that difficult.

How much is 10,000 times 1/20 plus 20,000 times 1/20? Qian Yang snapped his fingers, and easily came up with the answer: "One thousand and five!"

"That's right!" nodded in agreement.

"And then?" asked Qian Yang.

"How much did you pay for the stones?"

"Two thousand!"

"Silly paper!"