M4 part of Luguang is a modular, open source software platform used to build, deploy, and manage enterprise-level blockchain applications. It is built on top of the Hyperledger Fabric distributed ledger technology, and provides an infrastructure for secure, high-speed distributed transaction processing, including smart contracts and digital asset transfers. M4 part of Luguang also supports a variety of development tools and components, such as SDKs, APIs, and web-based development tools. Additionally, it seamlessly integrates with popular databases, such as MySQL and MongoDB, and features a five-tier security architecture.