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What will you do when you get a BUFF that can double your learning efficiency as long as you keep learning? Xiao Yi's answer is: Study hard! As long as you can't learn to die, learn to die! From small exercises to unsolved conjectures; From outdated knowledge to theories that subvert the academic world; ... When the existing knowledge and problems in this world cannot stop Xiao Yi from learning, He came back to his senses and suddenly discovered: He has stood at the pinnacle of human mind!

Hello, I am Ji Cheng. I used to be a scientist and studied mathematics, physics, materials, and biology. Whether it was the Fields Medal or the Nobel Prize, I have been on the podium. Of course, this is a thing of the past; I used to be an entrepreneur. Well, my business may be relatively large. Whether it is energy electronics, biopharmaceuticals, arms security, international trade, etc., I have been engaged in it. Of course, to be able to be so big, I have also adopted some "unconventional" methods. I will not introduce them to you one by one here. After all, it is all in the past; I used to be a prophet, predicting many major events in the world, maybe the World Cup finals champion, maybe the final winner of a certain country's election, making me the most authentic prophet in history, and gaining countless beliefs, until I predicted to the world 2123 The earth will be destroyed in 2018, but it is a pity that they did not believe me and began to slander me with all their words, until finally, they witnessed the end of the world with their own eyes - although I was among them, I felt that this was the fate they deserved, but this is already a thing of the past; Of course, I have also experienced many things, which may be unimaginable to you. I will explain them to you slowly in the future. Also, it's the year 2124, so you can call me - the savior. You may ask, why can I experience so many things? Then let me tell you a secret: when I die, I can go back to 2018. Do you think I'm crazy? Hmm, maybe.