Rongyi Zhou contributed to the riscv/riscv-isa-manual repository by improving the documentation for the SM4 encryption and decryption process. Focusing on technical writing and documentation skills, Rongyi identified and corrected a typo in the description of how the four words of the current state are read, clarifying the flow to prevent misinterpretation. This update ensured that the documentation accurately reflected the implementation, supporting both developers and reviewers in understanding the SM4 process. Working primarily with AsciiDoc (adoc), Rongyi demonstrated attention to detail and adherence to contribution guidelines, delivering a targeted fix that enhanced the reliability of the project’s documentation.