This article delves into zkLink, a multi-chain aggregation layer built upon ZK-Rollup technology. It comprehensively explores zkLink's underlying principles, solutions, current development status, and future roadmap, highlighting its innovative approaches to addressing multi-chain liquidity fragmentation, reducing transaction costs, and mitigating security risks. By constructing the Layer 3 network zkLink Nova, zkLink not only aggregates liquidity across Ethereum and its L2 networks but also streamlines dApp deployment across multiple chains, enhancing user experience. The article further touches upon zkLink's funding landscape and future prospects, showcasing its potential in driving the growth of the Ethereum and L2 ecosystem.