Li Yu was quite interested: "Tell me, what kind of duel method?" ”

Yu Lang helped Li Bai to lie down on the Hu bed, and took a pen, ink, paper, and inkstone: "Sign the life and death certificate, a fair contest, and the party who loses and dies shall not be held responsible." ”

"Oh? That is, if I kill you today, the Sword Master will not trouble my Li family? ”

Although Yu Lang didn't know the promise made by the Sword Saint for him, he also guessed seven or eight points after listening to Li Yu's words, and immediately responded: "Yes, if I die, the Sword Saint will not trouble you, and if you die, the government will not hold me responsible, let's write it on the life and death statement." ”

Li Yu fell into thought, and decided to make changes to the previous plan, Zhang Jiuling is old after all, even if he is let go tonight, he can't set off any waves, it's a big deal to set up an ambush on the road, anyway, Zhang Jiuling is just a toothless tiger without eight elite guards, but Yu Lang, this kid is really interesting, even if he returns in vain tonight, it will not be in vain to see what medicine he sells in his gourd.

Although it is a life-and-death duel, in Li Yu's opinion, it is just a game, this person acts uninhibited, likes to listen to his likes and dislikes in his heart, and is conceited, and there is naturally no reason to refuse Yu Lang's challenge.

"Happy, say, better than what?" After making up his mind, Li Yu's mood was even happier, he thought to himself that if he let Yu Lang grow up for another five years, he might be crushed by Yu Lang in all aspects, but now he is nine out of ten.

Yu Lang smiled: "What are you best at, presumably the cultivation of the three-legged cat in the upper realm will not be the capital that you are proud of, right?" Or is it the best at reincarnation? ”

In one sentence, Yu Lang blocked the two major strengths of his family and martial arts, but Li Yu was not ashamed: "What I am best at is calculation, do you mean to play chess with me?" ”

"Yu Lang can't, Li Yu is the youngest national player in my Tang Dynasty...... Zhang Xun couldn't help but remind, he had seen this grandfather play against foreign players in Chang'an, and Li Yu vomited blood from the old foreign country with white hair within a hundred steps.

Yu Lang shook his head: "I want to compare mathematics with you, let's give each other three questions, the questioner himself must be able to calculate the answer, whoever solves the most questions will win." ”

"Interesting, interesting." Li Yu was quite excited, in addition to being proficient in Go, he was also proficient in astronomical calculations, and he was worried about these non-obvious studies on weekdays, and there was no chance to show off, "It's better than this." ”

Yu Chaoran, Zhang Xun and the others looked confused, there was no mass foundation in mathematics in ancient times, probably only some people who could not read the Four Books and Five Classics, but had a more flexible brain, were willing to study.

Half an hour later.

Yu Lang solved Li Yu's three problems early, two of which were difficult in the primary school Olympiad, which were nothing more than classical arithmetic problems such as chickens and rabbits in the same cage, and the third one was a bit interesting, that is, building a simple mathematical model.

Li Yu tore the rice paper of the writing calculation process to shreds several times, and every time he felt that he was a little close, but he never counted the last step.

Yu Lang is too familiar with this feeling, presumably the teacher who produced the paper back then also enjoyed this feeling, the kind of test questions that seem to be able to see the answer at a glance are actually a trap, and the amount of calculation behind it is huge. Candidates for this type of question are the most reluctant to give up, always thinking that they can calculate it as long as they think of a certain key point, but in fact, hehehehe.

In Yu Lang's eyes, Li Yu is a paranoid science man, sometimes he has some grotesque behaviors, and once he is immersed in the topic, he can no longer extricate himself.

Finally, Li Yu gave up the pen and admitted defeat.

Yu Lang admired Li Yu's ability, in the absence of a modern mathematical foundation, Li Yu actually did these three questions correctly one and a half, if he received a serious education in modern times, I am afraid that he is also a science tyrant.

To Yu Lang's surprise, although Li Yu acted strangely, he was very committed to it, and after abandoning his pen, he had an attitude of wanting to kill and listen to respect.

In fact, it is not that Li Yu has multiple commitments, but that he is extremely conceited, and once he suffers a blow, he is very easy to fall into deep self-doubt and cannot accept the result of failure. He couldn't accept that Yu Lang, a thirteen-year-old boy, could defeat him in his best math in any way, which was more frustrating to him than failing in martial arts. This indescribable frustration made him think of suicide.

Yu Lang tore away the life and death situation in front of Li Yu: "Li Gongzi, I don't have any grudges with you, you have a good life to go, and I hope you can raise your noble hand and let us go." ”

Li Yu was stunned for a moment, didn't say much, turned around and walked out of the door, walked to the threshold and stopped: "If you are not Yu Jiaao's son, if my father is not Li Linfu, I, Li Yu, will definitely make you a friend." However, our identity determines that there is no possibility of reconciliation between you and me, and today's matter is over, and sooner or later we will have to face each other in the future. I, Li Yu, owe you a life, the mountains are high and the waters are long, and there will be a period in the future. ”

Lei Wanchun was a little dissatisfied with Yu Lang's behavior, thinking that he should not give up the perfect opportunity to get rid of this little devil.

Zhang Jiuling admired Yu Lang's way of doing things: "Lang'er acts hard and soft, but it is very different from his father. "If it is too rigid, it is easy to break, Zhang Jiuling looked for an opportunity to knock Yu Jiaao a long time ago, but unfortunately he never understood this truth.

Zhang Xun went to the government to find an errand officer, made up a meticulous story, and ended the matter. Xie Xianzun was greeted by Li Yu in advance, and he didn't make things difficult for everyone anymore, plus Zhang Xun was at the same level as him, so he was quite polite to deal with, after all, the Zhang family behind Zhang Xun was not a small family.

After tossing all night, everyone was tired, and they went back to their places to rest.

Yu Lang sat sullenly in the empty main hall, his chin propped up in thought.

The innocent chef and the little guy Tiezhu can't give them justice, this era is like this, the lives of the people who are promoted to fight are as light as mustard, and life and death are often decided by the powerful people's thoughts.

Yu Chaoran comforted: "Lang'er, there is no reason for many things in this world, order and law are just fig leafs for the big people, or the emperor's ruling tools. You've done a good job, you've grown up very fast in this world, and you've suffered a lot, so go sleep peacefully and don't worry too much. ”

Yu Lang wilted, and went back to his room to sleep.

The next day, the old minister Zhang Jiuling led Zhang Xun, Lei Wanchun, and Ning Xue to the door to leave. Lei Wanchun was determined to follow Zhang Xun before and after the saddle, Zhang Xun was relieved of the safety of the old prime minister, and wanted to escort him back to Qinghe County for a while, Ning Xue came to Yangzhou for Zhang Xun, so naturally he had to follow him.

Yu Lang said goodbye to everyone one by one, cherished each other, his mood was not very high, if he was not too weak at the moment, he would rather follow Zhang Xun to Qinghe County and accompany Ning Xue day and night. The loneliness of the traverser is indescribable, even if it is just a friend who looks similar to the old man, the bottom of the heart will be much more comfortable.

Ning Xue comforted Yu Lang softly: "You are just young, you will not be like this when you meet your favorite girl in the future, take care when you meet again in the future." ”

Yu Lang sent them to the Changting Pavilion outside the city before returning alone, and what they experienced in the past few days was like a spring and autumn dream.

When I returned home, I found Qingqing teasing the puppy sitting at the door.

Yu Langqi said: "You didn't follow Zhang Xiang back to his hometown? ”

Qingqing shook her head: "My father, he is just the illegitimate son of Ah Weng, and the clansmen in his hometown will not recognize me as a wild girl, so Ah Weng has always entrusted Brother Li Bai to take care of me." Brother Li Bai suddenly went to Chang'an alone, and Ah Weng asked me to stay at your house temporarily. ”

She was afraid that Yu Lang would dislike it, so she hurriedly opened the wooden box on her lap: "I don't live in vain, the gold and silver jewelry here is worth a lot of silver, even if it is my food expenses......"

Qingqing has always been a brutal and fearless image in Yu Lang's heart, and his sudden cautious appearance made him feel a little distressed.

Yu Lang smiled: "You can live as long as you like, it doesn't matter." ”

Qingqing smiled happily at this time, and the spring flowers of a tree were eclipsed.