Seeing Xiao Ming nodding solemnly, the old man's brows seemed to loosen slightly.

"Child, you don't want me to promise me anything, you just nodded and agreed?" Then, the old man was a little puzzled by Xiao Ming's simple agreement.

"No need, I believe that grandpa will not harm me, grandpa is a good person!" Xiao Ming shook his head violently.

"Hehe......"

When the old man heard Xiao Ming's answer, he couldn't help but laugh.

"Well, actually, I don't want you to do anything, even if you saw me today, and said those things to me, what did you, I hope you rot in your stomach, just don't talk to the second person. The old man suddenly said with a straight face.

Then, the old man picked up Xiao Ming's schoolbag and unfolded it in front of Xiao Ming's eyes.

"This bag left by your mother is not an ordinary product, it has been sealed by a master, the reason why you have not been promoted to cultivation for several years is because of the seal on this school bag, now, grandpa will untie this seal, after unlocking, you can smoothly practice and increase your cultivation, and there will be no hindrance. ”

"What is the seal, where is the seal?" Xiao Ming looked at the schoolbag that was too familiar to be familiar with, it was a gray schoolbag, there was no seal, there was no special symbol, what seal the old man was talking about, where was it.

"This is the array of legends sealed on your bag...... N derivative equation!" The old man's hand slowly lit up with a silver light, which crossed the surface of the schoolbag, and then, Xiao Ming's eyes widened in surprise, because, after the silver light, the surface of his schoolbag was covered with dense and non-circulating symbols, what F(x)...... What kind of Y or something, Xiao Ming immediately felt dizzy just by looking at it.

"Child, this formation is not something that you can watch with your current cultivation, grandpa will help you break this formation now!" The old man flipped his hand, and the schoolbag that was originally full of mysterious symbols turned into an extremely ugly, gray schoolbag, if it weren't for Xiao Ming's head still feeling a little dizzy, Xiao Ming thought he was dreaming just now.

"The guide of the x...... Sinx Guide ,...... F(x)'s guide ......" Then, as the old man shouted, Xiao Ming saw the old man's hand move quickly, in front of the schoolbag, a burst of fine light was stimulated, and there was an unknown spell or something in his mouth, Xiao Ming didn't understand it at all.

However, Xiao Ming immediately felt the rapid fluctuation of the aura around him, as the old man's movements became faster and faster, in front of the old man, the aura of various colors in the air was fabricated by the old man to form a mysterious light curtain composed of countless X, y, countless aura seemed to be swallowed by the light curtain, as the old man's movements became faster and faster, the light curtain became bigger and bigger, and the light in front of the old man became more and more prosperous, and finally the light curtain directly enveloped the old man.

"This ...... This ......" Xiao Ming also quickly retreated, he had already been subjected to strong fluctuations in vitality, and had to retreat farther and farther. At the same time, Xiao Ming's eyes were also more and more frightened, and he showed envy...... Just looking at what seal the old man had broken, Xiao Ming had an intuitive feeling that the old man must be much more powerful than the previous two high school students.

"x1 is equal to 0 and f(x) is equal to 2...... x2 is equal to 1 and f(x) is equal to 19......"

The old man's voice sounded slowly, and Xiao Ming also saw red, white, and various color number symbols emerging from the old man's body and blending into his school bag.

"Break, break, break!!"

The aura of heaven and earth exploded violently, and at the same time, there was a continuous roar of the old man.

"Boom ......"

Xiao Ming only felt a gust of wind rushing towards him, which immediately blew him down.

"Whew...... This Ancient Great Array is really worthy of being the Ancient Seal Array!" As the old man exhaled, the colored light around the old man suddenly dissipated and became invisible, and the place immediately returned to calm, as if nothing had happened.

"Grandpa, okay?" Xiao Ming got up from the ground and cautiously approached the old man.

"Well, kid, okay, I've helped you untie this ancient array, I hope you keep your promise and don't tell me about tonight!"

"Well, I will, grandpa, don't worry. ”

Xiao Ming took the schoolbag, looked down at the schoolbag, and found that the schoolbag didn't seem to have changed, just like before, he was about to have doubts, and wanted to ask the old man immediately, but just when he looked up, the old man suddenly no longer existed, and it was just a cliff in front of him.

"Grandpa has something, grandpa is gone...... Son, we're going to see you again!"

In the next second, when Xiao Ming was feeling surprised and trying to find the old man, Xiao Ming's ears suddenly sounded the old man's somewhat fluctuating voice. The old man left all at once, so that Xiao Ming didn't have time to react.

"Grandpa!!" Xiao Ming called out involuntarily.

However, in the wilderness, there is nothing but the sea of cliffs and clouds, and the old man seems to have never appeared, how could Xiao Ming call out the old man again.

......

............

"Brother Xiao Ming......"

"Xiao Ming!!"

When Xiao Ming was in a daze, two familiar voices came from the silent night.

"Ah...... Sister Ruolan...... Father!"

Xiao Ming suddenly woke up, these two voices were very familiar, Xiao Ming knew who it was as soon as he heard it, one was Ruolan's, and the other was his father's. Xiao Ming realized that it was so late now, he hadn't returned home yet, and his father must have been worried for a long time.

I must not be relieved, and now I have come out to look for it myself.

Thinking of this, Xiao Ming suddenly felt a little self-blamed, hurriedly carried his schoolbag, and walked down the mountain quickly.

"Ruolan, will your brother Xiao Ming really be in the Impure Mountain?" Ming Huang's eyes were full of worry, there were a few earth-shattering explosions from the Impure Mountain tonight, I don't know what dangerous things happened, but Ruolan said that Xiao Ming was in the Impure Mountain, and when Ming Huang learned the news, he was simply stunned.

If an accident happens to his only son, he must blame himself and die of guilt. It's because he put too much pressure on Xiao Ming, otherwise Xiao Ming wouldn't have dared to go home because he couldn't take an exam. At this moment, it was so late, Xiao Ming had no news, and Ming Huang blamed himself and looked for it worriedly.

"Well, Uncle Ming, I'm sure Brother Xiao Ming is in Impure Mountain. Ruolan's eyes were full of certainty, after all, she was Xiao Ming's tail, how could she not know that Xiao Ming would come to Impure Mountain when he was in a bad mood. But she didn't dare to follow, the impure mountain was so big, she only knew that Xiao Ming liked the impure mountain, and she didn't know the specific location.

Impure Mountain made a loud noise for the first time, and Ruolan's heart was immediately full of worry, so she immediately called Ming Huang, who had been looking for a long time in the county, to look for Xiao Ming together.

However, the two searched for several hours, but there was no news of Xiao Ming.

As time passed, the hearts of the two of them became heavier and heavier, and now, they were all about to rummage through the Impure Mountain, and if they couldn't find Xiao Ming again, the two would really despair.

"Father! Ruolan, I'm here!"

In the darkness, Xiao Ming's voice suddenly came, and then, Ruolan and the two saw Xiao Ming running down the mountain quickly.

"Xiao Ming!"

"Brother Xiao Ming!!"

Seeing Xiao Ming, Ming Huang and Ruolan couldn't help but cry out in surprise. Ruolan stepped over step by step and hugged Xiao Ming.

"Woo...... Brother Xiao Ming...... I, I've always found you!"

A gust of fragrant wind hit, Xiao Ming felt the warm fragrance in his arms, and Ruolan jumped directly into Xiao Ming's arms and cried.

"Son!" Ming Huang also stepped forward in two steps, looking at Xiao Ming with worried eyes.

Xiao Ming now looked fine except for being a little dirty and a little weedy, and Ming Huang breathed a sigh of relief for the first time.

Longhua County, Xiao Ming's home.

Xiao Ming's family only has his father and him, Xiao Ming was fed by his father with a handful of and urine, the two fathers and sons have relied on each other for many years, and Xiao Ming's mother, since Xiao Ming was sensible, has never seen her. However, his mother left Xiao Ming this schoolbag, which was regarded as a treasure by Xiao Ming.

Xiao Ming also envied other people for having the care and love of their parents, but Xiao Ming has not had a mother since he was born, and Xiao Ming has also asked his father, but Ming Huang is always hesitant, and finally, he told Xiao Ming that his mother went to a far away place. Xiao Ming has to cultivate hard, and when he cultivates to a certain extent, he can naturally see his mother.

Xiao Ming's only impression of his mother is that the schoolbag he has carried for many years is the only thing his mother left him. Therefore, tonight, Xiao Ming's schoolbag fell off the cliff, Xiao Ming was so worried and scared, and even risked his life to find it back, fortunately, the old man helped him and helped Xiao Ming find the schoolbag back.

Now, Xiao Ming is sleeping in his bed, still holding his schoolbag tightly.

Ming Huang didn't say anything from the moment he found Xiao Ming, the two sent Ruolan home, and returned to their own home, Ming Huang didn't mention Xiao Ming's assessment from beginning to end, and he didn't blame Xiao Ming, just let Xiao Ming clean up, told Xiao Ming to have a good rest, and he was so energetic to go to class tomorrow, and then Ming Huang waited until Xiao Ming went to sleep, and then he turned off the lights and went to sleep.

However, now that Xiao Ming is sleeping in his bed, he can't sleep at all.

Today's insight has completely opened Xiao Ming's eyes. The fight between two high school students, and a mysterious old man, are still flashing in Xiao Ming's mind from time to time, and as soon as Xiao Ming closes his eyes, he will think of everything tonight. On the way back from Ming Huang, he and Ming Huang also saw many people looking at the impure back mountain from a distance, full of surprise. There are even some speculations that it is said that the impure "Mandarin Duck" spirit beast in the back mountain has become powerful, and someone has broken into the impure back mountain, which has caused the anger of the mandarin duck, and the anger of the mandarin duck has caused such a shocking scene.

Hearing those speculations and exclamations, I don't know why, Xiao Ming even had an urge to tell them that he had witnessed the battle between two high school students, but Xiao Ming held back, he knew that if he said this, people would only treat him as an idiot and would not believe him at all.

"Don't sleep, can't sleep!" Xiao Ming tossed and turned, couldn't sleep, and finally simply got up from the bed, put on his clothes first, and put on his shoes.

Xiao Ming took out his weapon, a Chinese brand pencil, walked out of his room, and came to the courtyard of his home.

"One plus two equals three!"

"One plus three equals four!"

"One plus four equals five!"

"One plus five equals six!"

“......”

Unable to sleep, Xiao Ming simply took a pencil and moved in the courtyard, and suddenly, a series of moves stirred up pieces of dust in the yard, and the crackling sound in the air proved that Xiao Ming began to seize the time to cultivate again. The battle between the two high school students tonight strengthened Xiao Ming's determination to become a high school student, and now he can't sleep, so he simply came out to seize the time to practice.

"Three plus one equals four!"

“......”

"Five plus one equals six!"

"Five plus two equals seven!"

"Five plus three equals eight!"

"Five plus four equals nine!!"

"Boom !!" Xiao Ming jumped high, using five plus four equals nine, and the pencil in his hand hit the ground fiercely, and suddenly, the ground was shocked by this fierce move. This blow was the most powerful blow that Xiao Ming could use. If you shoot a first-grade elementary school student of the same level, you can beat him to the point of vomiting blood.

"Whew...... Whew......" Xiao Ming gasped and stood in the yard, sweat dripping non-stop, soaking through his clothes. When Xiao Ming is not assessed, it is easy to cultivate, after all, day after day of cultivation, addition within ten, Xiao Ming has already mastered it. If it weren't for Mr. Liu's one-plus-one and other moves today, Xiao Ming would have been able to take it, but Xiao Ming's luck was not good, and Mr. Liu used the only trick he wouldn't have.

"Come again!"

made a coherent addition in one breath, Xiao Ming was not satisfied, his seemingly ferocious series of moves only left a few marks in the yard, and those two high school students, with a casual blow, could cause such a huge pothole as a lake, Xiao Ming, who had seen high-end battles, unconsciously became more horizontal. I feel that these attacks are like children playing at home, but if you want to cultivate to reach the realm of high school students, Xiao Ming knows that the foundation is the most important, and if you get up from the ground and the foundation is laid, the chance of surviving the catastrophe in the future will increase.

Although Xiao Ming's cultivation is now the first grade of primary school students, Xiao Ming thought of Xiao Shengchu's catastrophe and the catastrophe of the high school entrance examination, I don't know what the reason is, Xiao Ming thought about it in the distance, after tonight's incident, he faintly felt that he would come one day.

“2－1=1！”

“3－1=2”

“4－1=3”

“5－1=4！”

“......”

After resting for a while, Xiao Ming practiced subtraction again. Suddenly, the entire courtyard was filled with Xiao Ming's pencil remnants, a series of subtraction moves, and the ground of the courtyard was ruined, as well as the innocent martial arts training pile.

In front of the courtyard where Xiao Ming practiced martial arts, Ming Huang saw Xiao Ming who was working hard through the window, and a trace of relief and gloom flashed in his eyes.

"Hey......" Ming Huang sighed deeply, and finally lay down again, lying on the bed, Ming Huang couldn't sleep. He kept his eyes open and listened to the noise in the courtyard. The son worked so hard, Ming Huang was relieved enough.

“9－1=8！”

"Boom!" the whole yard shook again.

"Whew...... Subtraction, it's over!" Xiao Ming's eyes lit up unconsciously, and after finishing the subtraction in one go, Xiao Ming didn't feel so tired, and felt that he still had enough energy to spare.

"Could it be that what the old man said, I practiced really because of the seal on the schoolbag?" Xiao Ming took off the schoolbag and carefully looked at the gray schoolbag in his hand again.

Just after continuous practice, Xiao Ming had a kind of pleasure, a kind of comfort, he never felt that the practice was so smooth, there was no stagnation, yesterday he played addition, subtraction, and had to stagnate a few times, today it was actually played all at once. Xiao Ming suddenly thought of what the old man said tonight.

"If that's really the case, then, is it possible for me to break through that move?!" Xiao Ming put on his schoolbag again, his eyes full of speculation that made him excited.

"Okay, I'll give it a try!" Xiao Ming's eyes were certain, he clenched the pencil and took a deep breath.

"Boom!" Xiao Ming suddenly jumped up.

"One plus one!" Xiao Ming slashed directly in the air three times, and suddenly, a basic move was used by Xiao Ming. One plus one, this Xiao Ming is easy to use.

"Equal!" Xiao Ming's eyes were fixed, ready to type the answer he had always dreamed of.

"Ah......" However, Xiao Ming's mind just appeared with a looming number, but Xiao Ming suddenly felt a sudden pain in his head, and the next second, Xiao Ming, who was in the air, fell to the ground all of a sudden.

"Hurt......" Xiao Ming only felt dizzy and slowly got up. This trick is still so difficult, can't you just think about it? Xiao Ming felt a sense of frustration coming, even if the old man unlocked the seal, would he still have to stop at this trick forever.

Xiao Ming suddenly felt a heavy heart, and slowly fell into boundless self-blame.

"Huh...... One plus one, is this the fate of the legend?" Suddenly, when Xiao Ming felt a headache, an old voice suddenly sounded in Xiao Ming's ears.

"Who!?"

A sudden sound sounded, which made Xiao Ming's muscles tense up suddenly, but in the next second, Xiao Ming quickly looked around his yard, there was nothing and nothing to find.

"Hehe, Xiao Ming, don't look for it, I'll ...... behind your back" The voice smiled heartily again, this time clearly in Xiao Ming's ears.

.