Shuang Cui focused on code quality and maintainability across several Go projects, including oasisprotocol/oasis-core, ethereum-optimism/supersim, and maticnetwork/bor. Over two months, Shuang addressed duplicate import issues and naming collisions, refactoring code to stabilize builds and tests while reducing CI failures. In oasis-core and supersim, Shuang removed redundant imports and resolved package aliasing conflicts, directly improving test reliability and maintainability. For maticnetwork/bor, Shuang enhanced documentation by correcting a function name in a comment, clarifying intent for future contributors. The work demonstrated attention to detail in code refactoring, documentation, and Go language best practices, with a focus on incremental improvements.