Worked on enhancing data clarity in the pingcap/ticdc and pingcap/tiflash repositories by standardizing how Grafana dashboards handle null values. Focused on implementing JSON configuration changes so that null values are rendered as zero, preventing misinterpretation of missing data in visualizations. Leveraged skills in Grafana, JSON, and data visualization to ensure consistent behavior across both repositories, resulting in dashboards that more accurately reflect underlying metrics. This approach improved user trust in the data and enabled stakeholders to make faster, more informed decisions. The work emphasized cross-repository consistency and addressed a common pain point in monitoring and analytics workflows.