Mathematical Analysis 202 1 Postgraduate Entrance Examination is relatively easy, and it is the first exam after the new syllabus changes. There are many conceptual questions, but there are only a few questions. The overall difficulty of the test paper is much lower than that of the 2020 postgraduate entrance examination. Even years are more difficult than odd years. According to this trend, the mathematics difficulty of the postgraduate entrance examination in 2022 will inevitably be greatly improved. The improvement of difficulty is mainly reflected in newer unconventional problems, increased calculations, corner knowledge points that HKCEE has not tested for many years, and practical problems of HKCEE, such as the application of calculus, the best physical application, and the economic application of the number three.