Chapter 19 Urgent! Where is Lu Shan? Chen Liang's mind was a little confused. Because what is happening now does not conform to his common sense. Students with outstanding academic performance must have been recommended by each province through the normal mathematics league. Only students with poor academic performance will try to get a place in a winter camp through training institutions to increase their capital for future studies. But what is this student whose student ID number ends with 717? Use connections to get into the winter camp through a training institution, and then get full marks in the CMO finals? For a student who could get full marks, were his school, province, or city blind to not allow him to attend the winter camp directly? And was he rejected? Chen Liang is the leader of the scoring group. He is deeply aware that the difficulty of the test questions in this CMO final is unprecedented, otherwise there would not be a situation where the first place got full marks while the second place dropped sharply to more than 90 points. Chen Liang decided that he must find the information of the student with the last digit of his/her number 717. If such a student were to be disqualified, it would not only be a loss for the CMO organizing committee, but also for the entire national mathematics community. If such students can join the national training team, they will definitely have a chance to qualify for the global IMO finals next year. Chen Liang said to the teachers in a somewhat reproachful manner: "We should have found this student's test paper just now!"
Afterwards, Chen Liang quickly called Director Hu again, but the other party's phone was out of service area. Later, he learned from other people that Director Hu had taken a flight back to Yanjing after dealing with things here. Chen Liang was anxious! He didn't care whether Director Hu was going back to Yanjing or not, but he was worried about where the test paper of student No. 717 was and whether it was destroyed! Fortunately, the working group had the student roster and specific student numbers. Chen Liang quickly went to the hotel to find the teacher of the working group and got the roster, and found the information of the student with the last number 717. Lu Shan, Class 3, Grade 12, Jiangzhou No. 1 Middle School, submitted by Jiangzhou Jade Bird Training Institution. The damp and cold wind in Jiangzhou in December is biting. Even if you wear a down jacket, you will feel your skin is exposed to the cold air. But Chen Liang was already sweating profusely from running back and forth, and his down jacket was loose. He hurried to the hotel front desk and asked for Lu Shan's room number, only to find that the student had already checked out. Chen Liang was frustrated and cursed, "One cut, one cut! Look now! All the top ones are gone." Chen Liang still didn't give up. He planned to make a special report on the matter to the organizing committee. So what if such an excellent student with high scores entered the winter camp illegally? Strength is everything! "Hello, comrade. Which room is Lu Shan in?" At this time, a young man next to Chen Liang was also asking the front desk anxiously. This person was Gao Jianming, a lecturer in Mathematics and Applied Mathematics at the School of Science of Jiangzhou University who was invigilating Lu Shan's exam that day. Gao Jianming was extremely shocked after listening to Lu Shan’s partial proof of the twin prime conjecture in the morning! When Lu Shan was discussing with Tang Yi in the morning, because they were very fast and Director Hu interrupted them later, many teachers did not even comprehend the specific content of Lu Shan's proof. Later, mathematics teachers from universities including Shuimu University, Yenching University, and Jiangzhou University looked at the blackboard and thought about it, and then they realized the seriousness of the matter. It is very likely that Lu Shan used bricks to solve the mathematical problem that had plagued people for more than a hundred years. Fortunately, Gao Jianming had been Lu Shan's invigilator and roughly knew the range of Lu Shan's student ID number. After asking around, he finally confirmed Lu Shan's name and came looking for him in a hurry. The front desk was puzzled as to why they were looking for someone. "I'm sorry, classmate Lu Shan checked out this morning." Chen Liang asked, "Teacher Gao, why are you also looking for Lu Shan?" Before the winter camp, the staff and teachers of the organizing committee met with the teachers who provided logistical support from Jiangzhou University, so Chen Liang and Gao Jianming had some interactions.
Gao Jianming didn't know that the students sent by the training institution had been disqualified from the winter camp. He asked in surprise, "The winter camp hasn't even ended yet, why did they check out? Is there something urgent?" "Ah! Teacher Chen, are you looking for Lu Shan too? Lu Shan is an amazing kid! I didn't know him when I was invigilating the exam that day, but I saw that he answered questions quickly and his thoughts flowed like water. He answered many difficult questions correctly." "And more!" Gao Jianming became cheerful when he mentioned Lu Shan's performance. "Did you go to the academic lecture hall today?" "Lu Shan discussed the problem of twin primes with Professor Tang Yi today, and he proposed a new proof method! Although he didn't finish the proof due to time constraints, many teachers said that it should be the finishing touch. Even Professor Tang Yi didn't think of this method!" "Professor Tang Yi also asked for Lu Shan's draft proof." Teacher Chen's heart skipped a beat. He knew that Lu Shan was excellent, but he didn't expect Lu Shan to be so excellent! It is easy to find serious and hard-working students, but learning mathematics requires not only hard work, but more importantly, talent! Chen Liang's body began to tremble. He hurried back to the temporary office and wanted to call Director Feng, but he thought that such a thing could not be explained in a few words. After arranging the scoring group's affairs, he paid for his own return to Yanjing. At this time, Professor Tang Yi had no time to have lunch in the hotel, so he took out Lu Shan's draft paper and studied it carefully. While watching, I took out a notebook and took detailed notes! Tang Yi felt his mind was completely empty, and then he put Lu Shan's paper page by page into it. Lu Shan's proof not only deepened his research results over the past ten years, but also ruthlessly broke down all the obstacles in his way! Go further down and you will find the truth! It would take too long to finish reading sixty pages of draft paper. At the same time, the assistant called and urged Tang Yi to pack his luggage quickly. Tang Yi's schedule is also very tight as he also has to go to Shuimu University to give an academic lecture. "Ah!" Tang Yi shouted in the room, wishing he could leave. He first read the paper written by Lu Shan on the draft paper in detail before making any further arrangements. "Professor, are you ready? If you're any later we'll miss the plane!" Tang Yi had no choice but to pack up his paper carefully and then board the plane with his assistant. He felt a little regretful! The paper only had Lu Shan's name, school and email address, but no phone number. He should have asked Lu Shan for a phone number just now. Leaders from the CMO organizing committee and Jiangzhou University came to see them off. Tang Yi originally wanted to mention Lu Shan, but was worried that such a good talent would be snatched away by these schools, so he held the draft paper of the thesis tightly, but did not mention Lu Shan at all. Tang Yi didn't know that in the academic lecture hall, the teachers from various universities who had reacted did not go to eat, but instead copied in detail the incomplete proof that Lu Shan had written on the blackboard. Where is Lu Shan? Seeking follow-up reading (End of this chapter)