The Eleent value chain is a decentralized advertising resource aggregation ecosystem. Detailed classification of inventory and integration of idle inventory through its unique 'neural network' and smart contracts. Advertisers and advertisers can freely exchange scattered advertising information, and exchange and enhance value between different fields through the "effective value chain". Through the circulation and encouragement of the EVC ecosystem, the ecosystem can operate efficiently and automatically, achieve autonomous management within the ecosystem, and improve the conversion rate, coverage rate, and profitability of advertising resources....