Li Lin, a teacher and lecturer at the Institute of Mathematics, School of Mathematical Sciences, Dalian University of Technology. His research direction is ordinary differential equations.

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The reporter of Future Network found on a website that the video of "Shenti" for postgraduate entrance examination is divided into four parts, with a total duration of more than 2 hours.

In the video, Li Lin, a lecturer in postgraduate mathematics, repeatedly stressed that "we are public videos and can't talk too much. It will be too late to wait until the exam. " "I suggest taking a look at the first and second orders. I passed the first order last year, and the second order is entirely possible. I won't say it. " "You passed the exam, you met the exam, and you got 4 points." "This exam has given me a lot of pressure, so I can't say too much" and other related words.