Daniel Zhao developed and integrated a new Rail Laser Sight accessory item and its crafting recipe for the Cataclysm-BN repository, focusing on expanding itemization and enhancing player customization within the game. Using C++ and applying skills in game development and item system design, Daniel handled the end-to-end process from design review through implementation and commit traceability. The feature allows players to craft and equip a new accessory, directly impacting gameplay by offering additional equipment options. While no bugs were addressed during this period, the work demonstrated depth in feature delivery and contributed to richer, more engaging equipment systems for players.