My name is Yingchao Liu, and I am a freshman of Capital Normal University for PhD. During the period of my master's degree. I won the national scholarship and the university-level merit student. In terms of scientific research, one teaching case was selected into the case database of China Professional Degree Case Center. I have published 7 articles in journals such as "Journal of Mathematics Education" (CSSCI), "Curriculum, Teaching Material and methods" (CSSCI). One of them was selected as a highly cited paper in Academic Highlights (October-November 2022). and one paper was accepted by Guangdong-HongKong-Macao Greater Bay Area Mathematics Education Forum. In the subject research, I participated in the research of a national Social Science fund project, and as the main researcher of a research project of the Social Science Federation. At the same time, I also had an English communication in The 4th International Conference on Mathematics Textbook Research and Development (ICMT-4).