This book is an old stock investor with 28 years of investment experience. He achieved financial freedom through investment and turned into a professional investor. His thoughts on investment. The book is divided into 5 parts: market, company, method, miscellany, and interview, with a total of 78 short articles, including understanding of the market, analysis of enterprises, thinking about investment concepts, reflection on investment decisions, etc. The whole book is presented in the form of short articles. Each article is the author's current thinking on a problem, presented in the form of essays, and the writing is easy to understand. At the same time, the author also analyzes some investment cases with examples based on actual investments, mainly presenting the decision-making basis at the time and subsequent analysis, which is more likely to resonate with readers.