In the Ethereum ecosystem, scalability is an unavoidable topic, and Caldera (\u003cc-7/\u003e) is breaking the deadlock in a unique way. It focuses on horizontal scalability and interoperability of Rollups, with the Metalayer unifying layer breaking down the barriers between different Rollup frameworks, allowing assets and data to circulate across systems. Developers can customize Rollups, leveraging Ethereum's security and decentralization while adapting to specific scenarios. The ERA token serves as fuel, a staking certificate, and a governance tool, driving the ecosystem's operation. From DeFi customized chains to the metaverse cross-chain economy, Caldera is building a Rollup collaborative network, making Ethereum's scalability not a competition of 'isolated chains,' but a collaborative evolution at the ecosystem level, which is worth looking forward to. \u003cm-9/\u003e