The LAC (LuxAlpa Chain) team has made some innovations in DAG (directed acyclic graph) technology in terms of system capacity, horizontal scalability, consensus algorithms, transaction speed, security optimization, etc. The development and deployment of a new generation of DAG block chain accounting system. LuxAlpa Chain is a technical leap from the design concept and coding implementation to promote the realization of "block chain" commercial landing, is a new stage into the value of the Internet. LAC's main network was launched in January 2019, and has reached a strategic partnership with global multi-appliance platforms, with applications already landing in several parts of South Korea. The United States, South Korea, Japan, Australia and other international communities currently active users of more than 100000 people. In the future, LAC will move to the ground in more related fields.