During March 2025, Xuan focused on improving data integrity within the NYCU-Service-Learning/nanao-system repository by addressing a schema issue in the User model. Using Prisma for database schema management, Xuan corrected a naming typo from "mentalFroms" to "mentalForms," ensuring accurate relationships between users and their associated MentalForm data. This adjustment enhanced the clarity and maintainability of the data model, reducing the risk of downstream analytics errors and schema-related regressions. Although no new features were introduced, Xuan’s work prioritized stability and readability, supporting smoother developer onboarding and more reliable user-mental form associations within the system’s backend architecture.