When playing contracts, you must not underestimate the transaction fees, as this is a significant output. New players may not understand this and casually throw away money that should belong to them. High-frequency players even say that the fees might exceed your principal. Originally, the trade was profitable, but when you check your account, it shows a loss, all because your fees were drained. For example, Binance charges a fee of 0.05% for market orders. If you calculate it based on 1000 USDT with 100 times leverage, it would be 1000 * 100 * 0.001 = 100 USDT. After rebates, you might get back 35 USDT, so relying on rebate can sustain your living, making it very necessary to open an account with #返佣 .