Contributed to the apache/doris-website repository by developing comprehensive documentation for three new SQL domain string functions, focusing on CUT_TO_FIRST_SIGNIFICANT_SUBDOMAIN, FIRST_SIGNIFICANT_SUBDOMAIN, and TOP_LEVEL_DOMAIN. The work involved authoring detailed Markdown documentation that included syntax, descriptions, and practical usage examples to support developer onboarding and correct function usage. Incorporated bilingual keywords in both English and Chinese to enhance discoverability and accessibility for a broader user base. Ensured all documentation aligned with existing website standards for consistency and maintainability. Leveraged skills in documentation and SQL functions to improve the self-service experience for users exploring domain-related string operations.