“What I have built here is a non-balanced, countable Markov chain, from which the Markov chain can form a directed graph...”

The conversation between Mardo and Du Xiaodi went straight to the subject from the beginning.Mardo is indeed very interested in the algorithm proposed by Du Xiaodi in the paper, and he has read it many times before he came to China, and has repeatedly deduced some of these computational steps.At this time, he came to Du Xiaodi with his own questions to ask Du Xiaodi, and the question of how difficult it was to make Maldo such an academic cow wonder.

Du Xiaodi answered a few words and found that he could not explain it in words.This is partly because her English level is still very limited, and on the other hand, this kind of mathematical derivation is not clear at all.After obtaining Yu Feng's consent, Du Xiaodi copied a chalk and began to give Maldo a writing on the blackboard.Maldo was still sitting below and listening, after a while he couldn't help it, and got up and went to the blackboard, picked up another chalk, and wrote it up, and argued with Du Xiaodi while writing.

Du Xiaodi was still a little nervous at first, afraid that he would smash himself.After a while, she gradually entered the state and forgot her fear.Although this algorithm was taught to her by Feng Xiaochen, she has been deduced countless times, and has been modified with the results of computer calculations, which can be said to be familiar with the heart, and Maldo's problem can be difficult to catch her.In the past, she had spent a few days and nights trying to find out the solution of this system of equations, although this work was not completed in the end, but the various changes in the equation she had studied, Maldo casually wrote a formula, she was able to deduced immediately, not even a bit of stumbling in the middle.

The two people wrote while saying, after writing a blackboard full, and then wiped it with the blackboard and then wrote.Maldo is the kind of person who forgets when he enters the working state, where can I remember that he was invited to be an examiner, and only regarded the conversation with Du Xiaodi as a peer.Du Xiaodi can't do it, he can only follow the rhythm of Maldo, and he can't pay attention to the attitude of Yu Feng, Cai Xingquan and others.

The whole audience is blind, like Cai Xingquan, Yang Zhuoran these sensible, naturally know what the old and young are saying on the podium, and others, including Yu Feng, because it is not a welding professional, listen to a few words on the hail, only look at a screen of the formula in front of the shaking, it looks very deep.

Gao Lei sat down, his mouth slightly cocked, and regarded everything on the podium as a play.He firmly believes that Maldo is the actor invited by Cai Xingquan, and what Maldo and Du Xiaodi wrote on the blackboard looks esoteric, but in fact they are arranged in advance, just to block his high mouth.

Where there is such a coincidence, and where there is such an unrespectable expert.You ask any question, how can you argue with a student for so long, is the student level too high, or is your level too low?

“Good, very good!”

After writing the blackboard more than a dozen times, Maldo's face was full of smiles, and he slapped him and expressed his appreciation for Du Xiaodi in an extremely exaggerated tone.

"Du, you are very good, your understanding of the theory of welding is very disproportionate to your age, I think, at least it should be 35 years old scholars to have such an achievement."Also, I think you’re a math genius, and your ideas are great!”

Mardo said sincerely to Du Xiaodi.Cai Xingquan had asked him to give Du Xiaodi a good comment in advance, and he also agreed, ready if Du Xiaodi's performance is not too bad, he will follow a few good words, but also to Cai Xingquan a face.But now, these words of praise he said were from the heart, because he felt that a young girl in her 20s could do this, which is really remarkable.

Hearing Maldo's praise, Yang Zhuoran and Li Zhaohui also gently slap and agreed.They are understanding, and they can see what kind of skills Du Xiaodi showed in this meeting just now.It can be said that Mardo's questions are a little more difficult than the most difficult questions they have prepared in advance, and Du Xiaodi has answered these questions satisfactorily, and in some places it is Du Xiaodi's own opinions, which makes them feel refreshed by the old people who have been immersed in the welding field for many years.

"Professor Yang, Mr. Li, you two should ask questions."

Seeing Maldo return to his position, Yu Feng said to Yang Zhuoran and Li Zhaohui.

Yang Zhuoran looked at Li Zhaohui, the latter smiled at him and shook his head, Yang Zhuoran also smiled, said to Yu Feng: "Yu principal, the assessment behind is no longer necessary."Just now, Xiaodu's performance has proved that she is a good welding student, I can say that the master's students who can reach her level are rare in China."

“I think she can go to a PhD.”After Maldo listened to Li Zhaohui's translation of his words, he loudly echoed the road.

“Yes, for welding, I’m an outsider.Since all three experts have said so... Professor Gao, do you see what you think?”He turned his head to the high and asked.

Gao Lei smiled slightly and said, “Isn’t this program a little wrong?”Mr. Maldo was invited by Professor Cai, and from beginning to end, he was the only one who asked Du Xiaodi's classmates, and there seemed to be only one problem, although they wrote a lot of formulas on the blackboard.Only he alone, I think that the level of Xiaodu's classmates has reached the standard, so is it not a little imprudent?"

Yang Zhuoran said: "Professor Gao, Professor Maldo just discussed with Xiaodu classmates, is a very difficult problem.Xiao Du gave a satisfactory answer in the process, I think this is enough to prove her skills.To be honest, the questions I prepared for General Li were not as difficult as Professor Maldo's just now, and it was a bit of a waste of time to ask those basic questions."

Gao Lei said: "You two are welding experts hired by the mechanical department, your level, I believe."But Professor Maldo, with all due respect, who can prove that he understands welding?”

"What do you mean?"You say Professor Maldo doesn’t understand welding?”Yang Zhuoran looked at Gao Lei, his face full of consternation.

He smiled and said, “I’m just asking a question.Just now Professor Cai did not say that he is a welding expert, right?Maybe he is just an expert in other fields, and it is up to him to determine whether a graduate student in welding is qualified, I am afraid it is not appropriate?"

Maldo felt from the eyes of the crowd that Gao Lei was talking about him, and he asked Du Xiaodi, who was standing in front of them from the podium, “Miss Du, can you tell me what the gentleman was talking about?”

Du Xiaodi thought about it and said in English: "Professor Maldo, this gentleman wants to know, do you understand welding?"

“Is it?”Maldo nodded, then said to Gao Lei, "Sir, I can tell you that I am indeed just a new infer when it comes to welding, and I don't know many problems."

Gao Lei also understood English, he heard Maldo's words, the expression on his face was more proud, he said: "Professor Yang, you see, he himself admitted, said he is just an introvert."

Yang Zhuoran showed a crying and laughing expression and said, “What’s strange about this, I also think I’m just an introvert.”In fact, researchers have this feeling that the more contact they have, the less they feel they know, and that's what Professor Maldo means."

"Are you sure?"How do you know he knows about welding?”Gao Lei asked.

Li Zhaohui couldn't help but turn to Gao Lei and said: "Professor Gao, the industry has a specialization, you are engaged in economics, we do not understand the field of welding."Professor Maldo is a big name in our field, in fact, Professor Cai has just introduced, said Professor Maldo is the IAW executive committee, you will not think that the International Welding Society executive committee does not understand welding?"

"International Welding Society..." Gao Lei's face suddenly became a sauce purple, Nima's Cai Xingquan, what do you say IIW, I thought it was a chess association, you said this is the abbreviation of the International Welding Society, I as to put such a big oolong?In the society can mix into the position of the executive committee, which is not the big cow in the industry, he personally came forward to the level of Du Xiaodi endorsement, even if he is casually said, no one is qualified to doubt.The more you talk at this time, the worse your face will be.

"Well, I think I misunderstood."He said humbly.

Yu Feng did not want to put too high, he asked: "Professor Gao, are you satisfied with today's assessment results?"

"Very well, I think that's a good form."He said with a hard scalp.

"Then, the level of Du Xiaodi's classmates should be recognized, right?"

“I think that since the experts have said so, it should be good.”

“Do you think we need to do further tests?”

“Maybe I don’t need to...”

“Well, that’s thanks to Professor Gao.Otherwise, let’s end today’s assessment.Professor Cai, the school has arranged a small banquet, you go with Professor Maldo.Yes, I called Xiao Du's classmates, and I think she had a very good conversation with Professor Maldo just now."Yu Feng began to arrange it unattended, and put Gao Lei to one side.

Cen Jianwei walked up to Gao Lei and asked respectfully, “Professor Gao, do you see what else do you ask for in our investigation work?”For example, do some more work in other areas?”

“I think that’s the end of it.”He answered with a black face.Of course, he could come up with other ways, but in the current situation, it is estimated that the results will not be different in other ways, but only fill his face with a few more slaps.

Cen Jianwei nodded with a smile and said, "Well, we will complete the investigation report as soon as possible, and we will thank Professor Gao for the guidance provided in the course of our investigation."