Grey Cloud Protocol is a new blockchain financial solution based on underlying cross-chain technology. It is a blockchain value network that prioritizes serving the financial industry and will empower cutting-edge financial fields such as trust, banking, insurance, securities, and leasing. . The DPoS consensus mechanism combined with Byzantine fault-tolerant security consensus can not only effectively ensure the rapid circulation of information and transactions on the main chain, but also ensure that the entire network will not be damaged by malicious attackers by isolating the Center (central) and Area (partition) from each other , with features of security, high performance, and consistency.