During November 2025, Liuqian Andy focused on maintenance work for the nrfconnect/sdk-zephyr repository, addressing a core issue in device state initialization. He removed redundant initialization logic by consolidating the z_device_state_init API into a single location within init.c, which reduced code fragmentation and improved maintainability. Working primarily in C and applying embedded systems expertise, he enhanced startup reliability by eliminating potential race conditions and duplication risks. This disciplined code refactoring aligned with Zephyr project conventions, demonstrating careful attention to long-term code hygiene. Although the period involved no new features, his targeted bug fix contributed to a more robust and maintainable codebase.