O3 swap is a cross chain aggregation protocol to realize the free transaction of native assets between heterogeneous chains. By deploying the mode of "aggregator + asset cross chain pool" on different public chains and layer2 networks, O3 swap provides users with a "one click" cross chain asset exchange experience. At present, the connected networks include Ethereum, BSC, Neo and heco, and are expanding to Solana, polygon, Polkadot and other ecosystems. Cross chain aggregation protocol mainly realizes more effective transaction path in two ways. The first is to aggregate liquidity - aggregate the liquidity of decentralized exchanges of major mainstream ecosystems to find the best price for trading. The second is cross chain asset exchange, which refers to the cross chain protocol to allow defi users to realize one click cross chain exchange of mainstream assets.