PCHAIN was created as a native multi-chain system supporting EVM with original PDBFT algorithm, unified knowledge graph and smart data Oracle mechanism. On March, 2021, PCHAIN rebranded to Plian. A proof-of-stake native multichain network that supports Ethereum Virtual Machine (EVM). Its PDBFT consensus mechanism enables any decentralised application running on Plian to maintain high-speed consensus through multiple chains and dynamic shards, creating the instant and hyperscalable foundation for programmable finance.