Polygon is a multi-dimensional DeFi underlying infrastructure that can conduct fully decentralized cross-chain transactions, and provide users with executable transaction prices very efficiently and accurately. It also includes decentralized stable digital currencies, Decentralized oracle machine decentralized insurance, liquidity mining, smart mining and other protocols to create the most comprehensive decentralized financial platform. Any team that wants to join DeFi can call the corresponding DeFi based on the underlying infrastructure of Polygon Smart contract protocol to create your own products, without taking into account the underlying technical problems, and easily complete product construction. Polygon will integrate with current mainstream public chains, such as Ethereum, EOS, TRON, etc., so that users can call Polygon's protocol on different underlying public chains to implement various DeFi functional applications.