The document provides tips for keeping existing business-to-business (B2B) clients and acquiring new ones. It recommends focusing research on understanding the target audience, drawing a psychological portrait of their needs, inputting client information into a CRM system, planning marketing activities based on the audience portrait, making clients satisfied through meetings, useful information, hosted events and entertainment, and letting clients share their impressions. The overall goal is to focus on understanding and satisfying the audience to enjoy success.