Mr. Chen Jian is Dr. Tsinghua University, the interpreter of mathematics examination syllabus and the founder of standardized tutoring system. President of Power Science Education, was awarded the Person of the Year of Tencent a20 17 Education Enterprise. I have been to the United States, Japan, Australia and Canada for international exchange and study. I have been engaged in postgraduate counseling 16 years, and I have mastered the key points, difficulties and necessary test points in the face of chaotic test methods in mathematics, so that students can get twice the result with half the effort. The high score guide of mathematics, the detailed explanation of real questions by famous experts over the years, and the sprint of mathematics before exam, which focuses on exam-taking skills, have become the analytical model of exam outline and the classics circulating in the industry. Over the years, students' evaluation is "difficult to understand, profound and thorough analysis, zero-based learning has gained something, and experts have other inspirations". The high hit rate every year makes countless zero-based candidates create a miracle of getting high marks easily. They are the ace math teachers in the industry and are praised as "immortal brothers" by the majority of candidates.