During September 2025, Chenshuo focused on enhancing the documentation quality for the FastHadamardTransform.fht() method in the apache/commons-math repository. By conducting thorough code reviews and leveraging expertise in Java, Chenshuo clarified the Javadoc to accurately describe the method’s intermediate calculations, aligning the documentation with internal mathematical expectations. This work addressed a bug related to typographical errors and improved the consistency and maintainability of the project’s documentation. The changes reduced onboarding time and minimized the risk of misinterpretation for developers implementing the FHT algorithm, reflecting a careful and detail-oriented approach to code documentation and collaborative open-source contribution.