Jialin Li developed a dynamic MQTT topic selection feature for the EMQX Kafka Data Bridge, enabling users to specify MQTT topics through SQL parameters and thereby improving message routing flexibility. Working within the emqx/emqx-docs repository, Jialin focused on enhancing documentation by updating data-bridge-kafka.md to clarify the use of Kafka Source SQL parameters. The work was implemented using Markdown and required strong documentation skills to ensure clear communication of technical changes. This update reduced manual configuration and improved onboarding for developers, addressing scalability and control in publish behavior. The contribution demonstrated depth in both technical implementation and documentation quality.