During December 2025, TaiShanQ focused on refining the reconciliation engine within the nautechsystems/nautilus_trader repository, targeting operational efficiency and maintainability. By leveraging Python and applying code refactoring and debugging skills, TaiShanQ removed verbose ETHUSDT debug logging and redundant debugging code, which reduced log noise without sacrificing troubleshooting visibility. The streamlined workflow improved log processing efficiency and produced cleaner execution traces, enabling faster root-cause analysis and more reliable monitoring of reconciliation scenarios. The work demonstrated a methodical approach to code cleanup and instrumentation, resulting in enhanced maintainability and traceability for the reconciliation engine, though no critical bugs were addressed.