Lu Chen took Li Daozong's sword, at this time Lu Chen was holding the Hundred Refining Sword in his left hand, and Shi Feng's Tang Sword was holding in his right hand, with two weapons, one black and one white.

"Guys, let me go a little, it's not good if I hurt you!" Lu Chen said with a smile.

The onlookers consciously moved the circle out of the way, Chai Shao was directly in front of Li Xiuning, and two generals also stood in front of Li Yuan to protect Li Yuan.

Lu Chen saw that the field was let out, so he picked up the Tang knife in his left hand and slashed down according to the hundred refining sword in his right hand, and the crisp sound of weapons intersecting sounded, and with the sound of "boom", he saw that half of the tip of the hundred refining sword fell directly into the dust, and the Tang knife in Lu Chen's left hand was intact, and there was not even a sign of curling the blade, giving people the feeling that the Tang knife just cut was not a hundred refining sword at all, but cut a piece of tofu.

"Shhh When everyone saw the scene in front of them, they directly gasped, these people thought that if the Tang Dao cut the Hundred Refining Sword, even if this Tang Knife could cut the Hundred Refining Sword, how could it be a situation where the enemy was injured by one thousand and eight hundred self-damage, after all, the Hundred Refining Sword was already the best material for casting weapons in this era, but the Hundred Refining Sword was actually cut off by the Tang Knife made by Lu Chen with "stainless steel", as if it was cutting tofu, how could these people not be shocked.

"I'll see!" Li Yuan was a little shocked after all, and immediately returned to normal, beckoning directly to Lu Chen, and motioned to show him the Tang knife.

"Your Majesty, please take a look!" Lu Chen respectfully presented the Tang knife to Li Yuan with both hands, and Li Yuan was not polite, he directly copied the Tang knife in his hand and observed it carefully.

"Good knives!" After Li Yuan found that the Tang knife was not damaged at all, he directly praised it, "Does this knife have a name?" Li Yuan looked at Lu Chen and asked.

"This knife was cast by the Tang Dynasty, so the minister dared to name it 'Tang Knife'!" Lu Chen said to Li Yuan.

When it comes to "Tang knife", many people have a misunderstanding, thinking that "Tang horizontal knife" is Tang knife, in fact, this is a misunderstanding, in fact, "Tang knife" is a general name for the four types of saber systems in the Sui and Tang dynasties, including instrument knives, barrier knives, horizontal knives, and Mo knives, because during the Sui Dynasty, these four sabers were not too extensive, and in the Tang Dynasty, they were gradually popularized in the army, so these four sabers were collectively called "Tang knives".

But now, Lu Chen directly called the "Black Tang Knife" he created "Tang Knife", which can be regarded as directly occupying this name.

"Tang Dao?" Li Yuan looked at the Tang knife in his hand, his eyes were full of love, because this was a kind of blade that appeared for the first time in Lu Chen, and it could be said to be a long knife unique to Datang, plus Lu Chen said that this knife was cast for Datang, which made Li Yuan's heart extremely happy, "Okay!" This knife will be called Tang knife in the future! Li Yuan directly clapped the name and gave it.

Lu Chen's name is nothing, at most it means that this knife has such a name, but Li Yuan set the name, then the meaning is different, Li Yuan is the emperor, and he speaks in Chrysostom, since Li Yuan said that this knife is called "Tang Knife", then all long knives made according to this system in the future will be called "Tang Knife".

"Why are there symbols here?" At this moment, Li Yuan suddenly found that the place where Shi Feng's gauntlet of the Tang knife and the blade of the knife were handed, and the three numbers "019" were actually engraved, but Li Yuan didn't know Arabic numerals, so he thought it was a symbol, looked at Lu Chen and asked directly.

"Back to Your Majesty, this is the number!" Lu Chen pointed to the Arabic numerals and explained to Li Yuan, "The back guard implements a one-person-one-knife system, and everyone's knife corresponds to the name, if this knife is lost, it is the responsibility of this person!" A weapon is a soldier's life, and if you lose your own weapon, what is the difference between it and losing your life? Moreover, if this knife is lost and someone takes it to commit evil, there is also a clue to trace! ”

After Lu Chen finished saying these words, the eyes of these generals on the side lit up, because Lu Chen provided a way to manage the arsenal!

"In addition, if the soldier holding the Tang knife is sacrificed, then the knife will be sealed, and if there is a descendant to inherit it, he can directly inherit the knife!" Lu Chen continued.

Good guy, Lu Chen not only used this "Tang Knife" as a management method, but also upgraded the "Tang Knife" to the level of family honor inheritance.

"Then this symbol... Belch... Number, what does it mean? Li Yuan nodded with satisfaction with Lu Chen's explanation, and Li Yuan also understood the meaning of what Lu Chen said.

"This represents zero and nine! In other words, Shi Feng was the nineteenth back-to-back guard warrior to be given the Tang Dao! Lu Chen explained to Li Yuan again.

"Oh! It's a fun way to record numbers! Li Yuan looked at the three numbers "019" on the Tang knife and said with great interest, "Is this number also invented by Lu Aiqing?" ”

"Sort of!" Lu Chen nodded, "The reason why the minister invented these numbers is because the minister thinks that this number is more convenient to write than us, so he used it!" Lu Chen explained to Li Yuan again.

Of course, at this time, the numbers invented by Tianzhu were only one to three, and it was not until the ninth century that the Arabs learned this number, and then introduced it to Europe, which was called "Arabic numerals".

"It's really much easier to look at this painting than the way we record it!" Li Yuan looked at the numbers on the Tang Dao again, and nodded thoughtfully, "This kind of number may be popular?" Li Yuan looked at Lu Chen and asked, seeing these simple records, Li Yuan suddenly remembered the account books of the six departments, at the end of each year, those account books need to be calculated for ten days and half a month, sometimes the calculation is wrong, and they have to be reworked, and now there is more than a month and a half to start the year-end accounting, Li Yuan couldn't help but think of it.

"Absolutely!" Lu Chen nodded, "In the new year, Weichen is going to teach children to learn this kind of number in the school in Lujiazhuang!" Lu Chen directly told Li Yuan his plan to open the school after the New Year.

"In that case, I'm going to come over when the time comes, and see what kind of magic there is about this kind of number created by Lu Aiqing!" Li Yuan knew that if he told Lu Chen at this time to let the Sixth Department send someone to learn this kind of number, Lu Chen would not necessarily refuse, but Li Yuan thought about it again, how could he learn it in just ten days, those people have learned arithmetic over the years to achieve the current effect, so Li Yuan also temporarily pressed this idea, but Li Yuan still dared to be interested in the numbers created by Lu Chen.

The emperor of the Tang Dynasty is good at this, but everything that is useful to the country, they can use it, and they are not murderous people, the early Tang Dynasty rarely heard of anyone "guilty for words", unless there is solid evidence, the emperor will really punish the crime, if it is "guilty for words", then Wei Zheng does not know that he has died hundreds of times.

"When the time comes, the minister will surely welcome His Majesty!" As soon as he heard that Li Yuan was going to come to the academy at that time, Lu Chen said directly to Li Yuan.

"That's right! This knife is the nineteenth, but what about the first one? Li Yuan seemed to think of something, and looked at Lu Chen with interest, "Lu Aiqing, didn't you make a Tang knife for yourself?" ”

"Your Majesty, the minister really didn't make a Tang knife for himself!" Lu Chen glanced at Xiao Yu on the side, and Xiao Yu's two eagle-like eyes, after hearing Li Yuan's question, stared at Lu Chen, just waiting for Lu Chen to say that the "No. 1 Tang Knife" was in his own hands, and then Xiao Yu would have an excuse to join Lu Chen, but unfortunately Lu Chen didn't give him this opportunity at all, and directly told Li Yuan that I didn't prepare a Tang knife for myself.

"Where is the No. 1 Tang Knife?" Xiao Yu interjected a little anxiously on the side and asked.

Li Yuan glared at Xiao Yu with some displeasure, while Lu Chen looked at Xiao Yu with a sneer.

"Lord Xiao? You seem a little disrespectful, don't you? Your Majesty is asking Ben Hou, is it your turn to interject? Lu Chen looked at Xiao Yu and said with a calm face.

Lu Chen's words directly buttoned a "disrespectful" hat to Xiao Yu's head, and Xiao Yu's eager interjection was indeed a little disrespectful to Li Yuan.

"Your Majesty, the minister is just anxious and eager to see the No. 1 Tang Dao! I am quick to speak for a while, and I hope that Your Majesty will forgive your sins! Xiao Yu saluted Li Yuan directly, looked at Li Yuan with a worried face and said.

"Xiao Aiqing has also been a veteran for many years, and I know it! I forgive you for your innocence! Li Yuan looked at Xiao Yu's cautious and trembling appearance, not to mention how comfortable he was, you must know that these families are also pretending to be in front of Li Yuan, after going out, when they return home, which one is not a high-minded appearance, which can make these families deflated, Li Yuan is the most willing to see.

"Thank you, Your Majesty!" Xiao Yu saluted Li Yuan again, and then stood aside with his mouth closed, but his face was gloomy and about to drip water, staring at Lu Chen deadly, and Lu Chen counterattacked back twice, which made Xiao Yu's heart more and more angry, he stared at Lu Chen now, just waiting for Lu Chen to make a mistake, so that he could take Lu Chen hard and let out the evil anger in his chest.

"Lu Aiqing, you haven't told me yet, where is this Tang Dao?" After dealing with Xiao Yu's matter, Li Yuan turned his head and looked at Lu Chen with a smile.

"Your Majesty! Isn't the No. 1 Tang Dao here? Lu Chen smiled and pointed into the distance, and saw the general of the Weiwei Guard led by Su Dingfang walking majestically in front, followed by the tall Feng Huai, holding a rectangular crimson brocade box in both hands, and walking quickly towards the ironworks where Lu Chen was.

As a few people approached, everyone couldn't help but praise when they saw these generals who were carrying the guards, Fang Qi and Meng Ji were not counted, and the other Su Dingfang and Du Junqiu were all good-looking, but these four people were directly pressed by Feng Huai, who was holding the brocade box.