Recently in the trading community, the most discussed topic among veteran traders is still the age-old yet most critical issue—capital efficiency. During the craziest bull market in 2021, many people clearly held spot BTC in their hands, but their futures accounts were completely empty. When the market surged, to add positions, they had to transfer funds first; by the time the money arrived, the price had already run far away. That sense of disconnect—"money is in the account, but not in the right place"—is practically an invisible ceiling for traders.