This book is a compilation of lectures delivered in 2017 at Xinya College, Tsinghua University and Tsinghua Institute for Advanced Study in Humanities and Social Sciences. The lectures on Politics, Philosophy and Economy (PPE) is a specialized series tailored for students majoring in politics, economy and philosophy at Tsinghua University. Renowned professors from the humanities and social sciences, both domestic and international, were invited to lecture. In 2017, Professor WANG Hui led the courses, aiming to broaden students' knowledge base and promote general education.Positioned as interdisciplinary material in the humanities and social sciences, this book serves a dual purpose. It aims to share and popularize cutting-edge academic research while showcasing Tsinghua University’s excellence in liberal arts education, robust research capabilities, and top-tier educational standards. This underscores Tsinghua University’s commitment to advancing liberal arts education.