QiDao is a way for you to keep your crypto and still be able to spend its value. That means you're able to borrow stablecoins without having to sell your crypto assets, and do so at 0% interest!
TVL counts the AAVE tokens that are deposited within the Yield Instruments section of QiDao, the Vault token deposits of CRV, LINK, AAVE and WETH, as well as USDC deposited to mint MAI.