The Lightning Network is a second-layer solution built on the Bitcoin blockchain, often referred to as Bitcoin's L2. Its primary purpose is to address Bitcoin's scalability issues and high transaction fees. The Lightning Network has the highest TPS (Transactions Per Second) among all blockchain scaling solutions, meeting the demands of various payment scenarios. The basic process of the Lightning Network involves the establishment of payment channels between users in a peer-to-peer manner. Users with open channels can easily conduct off-chain transactions. As more and more users establish payment channels among themselves, a network of payment channels is formed, creating the Lightning Network. Within this network, users can engage in off-chain transactions with each other.