Bitcoin Classic is an electronic payment system based on cryptographic proof instead of trust, allowing any two willing parties to transact directly with each other without the need for a trusted third party. BGH is a brand-new Bitcoin chain formed in the third bitcoin production reduction block height of 630,000 hard fork. Bitcoin Classic is the evolution of Bitcoin, optimized and upgraded the original Bitcoin chain. BGH is the cheapest and fastest global P2P cross-border digital payment system. From increasing transaction speed, reducing transfer fees, and deploying the Lightning Network, BGH increases the unit block size and supports each block size as a dynamic value, increasing the original 1M block limit to 8M. Increase the number of transactions that the network can handle. It handles all transactions in each block more flexibly.