During February 2026, Tien Nguyen Khac focused on improving the reliability and user experience of the polkadot-developers/polkadot-docs repository. He addressed a navigation issue by updating the Routescan explorer link, ensuring users were directed to the correct mainnet resource instead of the testnet. This fix enhanced the accuracy of customer-facing documentation and improved repository quality. Tien applied his skills in blockchain and smart contracts, working primarily with Markdown to implement the change. While the scope of work was limited to a single bug fix, the update demonstrated attention to detail and a commitment to maintaining accurate, user-friendly documentation.