In 2023. Wu Zhongxiang, a graduate of Xi Jiaotong University, stayed as a teacher. He is a professor of mathematics at Xi Jiao Tong University. He has been engaged in the research and teaching of advanced mathematics for a long time. He has participated in the compilation of the teaching materials "Fundamentals of Mathematical Analysis for Engineering" and "Fundamentals of Advanced Mathematics" of the Higher Education Society. His strict questions were published in 2023, and the depth of the strict questions is relatively general, or 330 questions are substitutes, and 660 questions also overlap.