YFI is a native function token from Yearyearn. Finance that can be used for the governance of the platform. Users can earn this token by providing liquidity to ypool, the aggregate liquidity pool of the platform. And Yearn. Finance is a decentralized finance (DeFi) platform that aims to build aggregate liquidity pools, leveraged trading platforms, automated market making, and other functional platforms. Forever. Finance currently offers a service for borrowers that automatically transfers the tokens they want to lend to dYdX, Aave, and Compound for maximum returns, and other products will be released soon. YVault, for example, offers more arbitrage strategies for Synthetix, mStable, and other projects.