The book "Sales Psychology (Understanding Customer Psychology in seconds)" written by Tan Hui summarizes the cases, working methods and experiences of many sales staff, and conducts a comprehensive inventory of the sales psychological skills and methods that tens of millions of sales staff are most likely to use in their work. This book focuses on refining practical experience, skillfully integrates sales psychology knowledge, application methods, situational training, and case analysis, and systematically discusses and drills important processes in sales, in the hope that sales staff can effectively improve their operational level in sales and quickly improve their performance.