Cai Wei: publicly available information about this author is limited, and the only known work is Startup in Thirteen Lessons, commonly classified under personal finance. On the basis of the existing information, the writing centers on the theme of entrepreneurship and is organized in a course-like, section-by-section structure, breaking the issues involved in starting a business—such as initial preparation, business thinking, and financial arrangements—into a number of lessons presented layer by layer, so that readers may read in order or consult selected parts as needed. The "thirteen lessons" in the title indicate a lecture-style arrangement rather than a collection of miscellaneous essays; its classification under personal finance suggests that the discussion is largely related to financial planning and resource allocation for individuals or small-scale operators. Because no reliable records of the author's life, nationality, education, or professional background have been found, this introduction makes no speculation and merely outlines the writing profile based on the work information in the database: it is aimed at ordinary readers with entrepreneurial intentions, written in plain language, and focused on practical sorting and reminders. The book's influence still awaits support from further materials, and readers may regard it as an introductory reference.