Specially converted to USDC for contracts, even ordinary level users can enjoy the USDC fee waiver benefit (only for limit orders/Maker). For high-volume and frequent traders, it's very attractive, equivalent to Binance giving themselves a "rebate" 😎
However, my BTC contract has been closed. In two windows, the contract was closed simultaneously, and the same quantity was purchased in the spot market, which means the contract was converted to spot. Initially, the plan was also to hold long-term, and I opened the contract to save on fees, but later found that although the opening/closing fees were saved, for long-term holding, the funding costs might be higher than the fees (because it is not frequent trading, the fees are only incurred once when opening).
There is still too much to learn～