Based in Foshan, according to the understanding of search by the book collector, this article analyzes the essence of search engine optimization and collects some good SEO materials, tutorials, case analyses, and theories. I welcome exchanges with SEO professionals from all walks of life. Through the study of SEO theory, the book collector summarizes and shares some insights and techniques, including discussions on some basic computational rules of search engine optimization, which serve as the foundation for SEO operations.