During July 2025, this developer focused on enhancing hazard visualization accuracy in the gis502/xian_vue repository by addressing a critical landslide display logic bug. They refactored the loadLandSlide function to accept a target array of indices, enabling the filtering of landslide points within a specified elliptical region. This targeted approach reduced misrendering and visual noise, allowing operators to assess risk more clearly. The work demonstrated proficiency in JavaScript and Vue.js, with an emphasis on frontend data processing and geospatial filtering. Although the period involved only one bug fix, the solution reflected thoughtful problem analysis and effective technical execution.