There are no Arabic numerals in this era, of course, not to mention binary equations, mathematics together, in this era, at best, can only be called arithmetic, and people who learn arithmetic, at best, are those who are in order to make a living in the bookkeeper to learn some skins, a little more difficult arithmetic is basically still in the embryonic stage, if you want to have a math master against the sky, it will take at least a few hundred years = to emerge! At this time, the people who really knew a little more arithmetic were basically cultivators like Dong Ming......

At this time, the world is in a great chaos, the selection of talents in various countries basically depends on recommendation, and some countries hold imperial examinations without examining arithmetic, therefore, arithmetic has not been taken seriously at all, and it is not difficult for the topic of chickens and rabbits in the same cage to stump those doctors of arithmetic in the Tai Academy of various countries.

And Xiao Chen did not use the equation once in February at the beginning, but used some of the incomplete solutions of the ancient arithmetic classic "Sun Tzu Sutra", but judging from the reaction of everyone, Xiao Chenxuan can not be difficult to launch, although "Sun Tzu Sutra" exists in this world, but there are only some incomplete solutions, and these incomplete solutions are normal for these people not to understand, so Xiao Chenxuan said a simpler and easier to understand solution, and it is natural for everyone to want to know.

"This is called the equal sign, this is the plus sign, the minus sign, this fork, can be understood as a number that I don't know for the time being......" Originally, Xiao Chenxuan didn't think about it so much at first, just tell everyone casually, but when he really started to explain, Xiao Chenxuan found out that this group of scum of Zhan Wu popularized the knowledge of binary equations to them, just like giving a group of children who had just entered elementary school, which was very brain-consuming.

But since the words of the explanation began, Xiao Chenxuan felt that he naturally couldn't give up halfway, so he had to be patient and move forward little by little.

"In this way, the two unknowns are solved, which is the number of chickens and rabbits." It wasn't until about ten minutes later that Xiao Chenxuan breathed a long sigh of relief, and finally popularized this group of scum from beginning to end, feeling a little exhausted.

"It's unbelievable that there is such a way to solve the problem." Hearing Xiao Chenxuan explain the solution method, Dong Ming couldn't help but admire.

And the missions of several countries, in fact, they are not very interested in learning arithmetic, they just want to see if Xiao Xuanchen can really solve the problem, of course, there are some students in the missions of several countries, learn one or two, and it is also good to return to their own country to pretend to be forced, and at the same time, going back can also impress the masters who taught them, but everyone thought for a while, and then tried out the correct answer to this question in their minds, and then used Xiao Chenxuan's method to find another way, which is really useful, It only took two breaths for everyone, and at this time, everyone's eyes looking at Xiao Chenxuan were full of all kinds of worship.

Xiao Chenxuan, who hadn't pretended to be forced for a long time, saw everyone's adoring eyes, and analyzed it very kindly for everyone, no, Xiao Chenxuan was very proud, squinted and said: "It's unbelievable, right, otherwise, this king will use other topics of the same kind to tell you." ”

Hearing Xiao Chenxuan's words, in the banquet hall, everyone leaned their heads towards Xiao Chenxuan, and kept exclaiming.

"Is there any other way? Let's talk about it. ”

Xiao Chenxuan pursed his lips and said seriously: "First of all, you need to remember these new counting methods and symbols......

Hearing this, everyone looked at those strange simple graphics again, although Xiao Chenxuan had just said it, but they had never seen it, they were still very curious, these strange symbols were combined to be a new counting method.

Of course, everyone has received aristocratic education and has a profound background, although this thing seems novel, but it is not difficult to understand, after Xiao Chenxuan's simple explanation, it took a little time to digest this set of rules.

I was amazed that this method was undoubtedly much better than today's counting methods, and it was more convenient and simple......

Seeing that everyone kept nodding, Xiao Chenxuan suddenly felt that teaching and educating people was also quite good, this group of scum of the five wars, they could fool the past by making up some stories casually, and if someone asked if they didn't understand in the future, it would be good to make up a story to answer.

"Got it?" Xiao Chenxuan looked at everyone and asked expectantly.

Although he was in the process of several competitions, although some people doubted that the process was a little tortuous, Xiao Chenxuan felt that in the banquet hall, there was no shortage of talents who would govern the country and love the people.

"Nope." But what Xiao Chenxuan didn't expect was that except for Dong Ming in the banquet hall, everyone didn't hesitate to deny it.

Hearing everyone's answers, Xiao Chenxuan could only say a group of rotten wood, but what Xiao Chenxuan didn't expect was that Dong Ming, the only one who could understand, actually covered his chest and took a few deep breaths, and then dragged his seemingly tired body away without looking back.

Xiao Chenxuan won three battles and three victories, won the prize, and the banquet came to an end, and the rest of the trivial matters naturally had nothing to do with Xiao Chenxuan, especially some details of the hunting conference a few days later, naturally Huang Qiushui, the deputy envoy of the mission, discussed it with the six countries.

Xiao Chenxuan, who naturally completed his thoughts, was also happy, so if there was no accident in the next few days, it would be not very good to ask Xu Qingchen to be with me, so I would travel for a few days, and the only bad thing was that he won the two prizes of Chengying and Xizhou Liwei at once, although Xizhou Ligui gave it to Xu Qingchen, but it was inevitably targeted by thieves.

On the night after the banquet, the Chengying Sword that Xiao Chenxuan brought back was unexpectedly targeted by someone with a heart, and a group of black-clothed people talked not far from Xiao Chenxuan's house.

"Steal! Find a few good thieves with you, see the right time tonight, and find a way to steal the Chengying Sword for me, whoever wants to get this matter done for me will be rewarded. "The person who speaks is good ten = let it go, and directly promise to the people under him.

However, on the other side of the person who spoke, the person who was responsible for stealing the Chengying Sword for the man in black was not moved, but said in a deep voice.

"Master, although the Chu State Mission was attacked a few days ago, except for the death of some guards, the Chu State Mission did not lose anything, which proves that there is no shortage of masters around Xiao Chenxuan, therefore, it is not so easy for us to steal the Chengying Sword, so I think that even if I send out the thief masters, I may not be able to succeed, in case of failure, none of us may not be able to come back."

Hearing this, the man in black gritted his teeth and said, "Okay, then let the person who goes put poison in his teeth, and if you miss, I will definitely take care of your family." ”

"It's the master." The person in charge of stealing the Chengying Sword said in a low voice.

The man in black nodded, and then instructed the person in front of him, "Remember, it's definitely not just us who are eyeing the Shadow Sword, you guys be careful." ”

The night was getting deeper, and Xiao Chenxuan's house was unusually quiet.

But at this time, there was a trace of fire in the place where Xiao Chenxuan's house placed the Chengying Sword, and An Tingyong, who was in charge of patrolling, and the guards were shocked when they saw the bright one, because the bright place turned out to be the place where the Chengying Sword was placed.

After a while, there was a fighting figure in the room where the Chengying Sword was placed, and even the fire was getting bigger and bigger, as if something had happened.

Of course, I don't know if someone attacked suddenly, or if something happened in the house, but no matter what kind of possibility, Xiao Chenxuan's guards must hurry up, the Chengying Sword was won by the prince after the Duolun battle, and they naturally couldn't let the Chengying Sword have an accident.

If there was any mistake in the Chengying Sword, how could they, as Xiao Chenxuan's guards, be worthy of Xiao Chenxuan's painstaking cultivation and trust in them.

However, the guards who placed the Shadow Sword seemed to be a little far away, and even if An Tingyong on patrol would fly off the wall, it would be too late for them to fly to the place where the fire was lit.

It's just that when they arrived at that place, it was too late, and several of the guards guarding the Chengying Sword had already fainted and collapsed in a pool of blood, but fortunately, the guards were only seriously injured and did not really die, but the Chengying Sword was nowhere to be found.

An Tingyong looked at this kind of scene, and didn't know what to say for a while, in the past few days, our Chu State Mission was attacked twice, which is unimaginable!

In order to find out the situation at that time, An Tingyong called the accompanying military doctor, showed it to a few guards and asked.

"What was born at that time?"

One of the guards seemed to feel guilty, and said as if he was a little scared: "At that time, a thick smoke blew in through the window, and we suddenly became a little sleepy, and we couldn't help but want to take a nap, but after a while, a group of black-clothed people entered the window, and when we waited for a reaction, this group of black-clothed people rushed up to the two of us, and they slashed and killed me for a while, so we lit the curtain next to us and sent a signal to the general, but those people were vigorous, and after a while, we were seriously injured and fell to the ground, and those blacks took the prince's Chengying Sword and fled." ”

An Tingyong checked the scene, and according to what the two guards said, he roughly understood the situation at that time, the purpose of the black man was obviously the sword, but these black people didn't have long brains? I didn't check the authenticity of the sword, so I took it away.

An Tingyong sighed twice, he still had great powers, and he expected that someone would attack the Chengying Sword early in the morning, so he arranged for someone to replace him early, and also reduced the guards guarding the sword to a minimum, thinking of this, An Tingyong looked at Xiao Chenxuan and smiled in the direction of the room, and then turned his head to the guards behind him and said.

"What are you still doing there? Excalibur was stolen, don't you hurry up and report it to the official! ”

Hearing An Tingyong's words, the guards around him reacted at this time, the prince was stolen in less than a day after winning the Chengying Sword, and he must hurry up and report to the official, otherwise how would he and the others face the prince.

"Yes, General, I'll wait here."

Watching the guards go to report to the official, An Tingyong's lips rose and said loudly: "Protect the scene, and at the same time, let the injured personnel hurry up for treatment, remember, you are seriously injured." ”