Yuxi Zhang focused on code quality improvements in the pytorch/executorch repository, specifically targeting the maintainability of Bazel build scripts. By removing an unused import from the targets.bzl file, Yuxi streamlined the backend codebase, reducing potential import-related issues and simplifying future development and code reviews. This work, implemented using Python and backend development skills, enhanced the clarity and readability of the build rules, making onboarding and auditing more efficient for the team. Although the scope was limited to a single feature over one month, the change contributed to the long-term stability and maintainability of the executorch project’s infrastructure.