What this case covers
The author Jincheng runs a Xiaohongshu virtual store and used Codex to build two product selection systems, covering product collection and sales monitoring. The article explains how to use the systems, two monitoring cases for CPA and Teacher Qualification Certificate, and how newcomers can start with Excel.
Questions it answers
- Why can't total sales directly determine a product?
- What problems do the two systems each solve?
- What does the sales curve in the CPA case show?
- How short is the window in the Teacher Qualification Certificate case?
- How can newcomers start product selection without a system?
Our observations
- The demand window for exam-related virtual products is determined by exam dates, and both ramp-up and cooling down are concentrated.
- Monitoring sales changes can only assist product selection; it cannot infer the other party's profit or refunds.
- Getting the manual process working first and then automating is more practical than pursuing a complete system from the start.
From the author
The system is only responsible for watching things for me, not for making decisions for me.