Block Link (Lianxun Chain, abbreviated as LK) is a blockchain project based on big data communication and social networking. It is also a cryptocurrency project. LK leverages the distributed underlying structure of blockchain to build an internet-based data security encryption communication and social platform, providing secure, anonymous, and uniquely key-certified communication and social services. It has developed a privacy-secure encryption gateway for social networking based on the Lianxun smart contract. As a cryptocurrency based on the POWB consensus mechanism, it was born in December 2018 with a total supply of 1 billion tokens. Block Links aim with its big data communication and social networking is to create a complete encrypted communication ecosystem integrating "video, communications, and social networking."