The China Academy of Information and Communications Technology (CAICT) Xinghuo Chain Network and Ant Chain have shared some important news. They've released their Blockchain Domain Service System (BCDNS) and Relayer as open-source tools, which means developers can use them for free and contribute to their improvement on GitHub. BCDNS is like a system that helps identify and connect things on different blockchains. The Relayer network is like a messenger that makes sure messages go safely from one blockchain to another. This is a big step to make blockchains work together better and to create secure digital identities.