Aave also provides an advanced loan mechanism - flash loans. Flash loans allow any available amount of assets to be borrowed without providing collateral, and only require a flash loan fee of 0.05%. To conduct a flash loan, the borrower needs to establish a contract to request a flash loan and follow the official instructions.

Flash loans restrict borrowers from repaying loans within one transaction, which means that the borrowing and repayment of loans must be completed within the same block. Ethereum's current block time is 12-14 seconds, which means that borrowers need to complete it within this time.