The difference between Zhang Yu's 30 lectures and 18 lectures is that 18 lectures = Zhang Yu's advanced mathematics strengthening, and 30 lectures = Zhang Yu's advanced mathematics foundation. 18 is an intensive reading, and some basic contents are not mentioned. It is integrated with Basic 30. If you don't want to watch 30 classes, such as talking to other teachers in front, you should at least watch 18 classes. I suggested for the first time that the basic course of line generation should be taught by Mr. Li Yongle. Lectures should be detailed, and exercises are indispensable. I made the basic article of 1800 by myself.

Zhang Yu introduced the instructions.

Ph.D., a well-known mathematics tutor for postgraduate entrance examination in China, the "backbone teacher of national excellent curriculum construction" of the Ministry of Education, and the author of the national best-selling book "Zhang Yu's Advanced Mathematics Lecture 18", Zhang Yu's Lecture on Linear Algebra 9, Zhang Yu's Lecture on Probability Theory and Mathematical Statistics 9, Zhang Yu's Classic Postgraduate Mathematics Source 1000, Zhang Yu's Complete Solution to the True Question of Postgraduate Mathematics, and one of the analytical editors of the National Unified Postgraduate Mathematics Examination Outline of Higher Education Publishing House, invited experts to present it at the 2007 Slovenian Global Sustainable Development Conference 15 minutes.