During October 2024, Chen focused on enhancing the reliability of pipeline construction within the SpinalHDL/SpinalHDL repository. He addressed a complex bug in Builder.scala by implementing robust handling for orphan nodes, specifically targeting cases with null up/down connections and dependencies already resolved. Using Scala and his expertise in hardware description languages, Chen introduced new rules to prevent improper seed generation and edge-case failures in graph-based HDL pipelines. His work reduced downstream debugging and maintenance costs by making pipeline behavior more predictable and stable. The targeted, commit-driven approach demonstrated depth in dependency analysis and contributed to improved maintainability of the codebase.