According to @GreeksLive, recent discussions in the official Chinese Telegram group about DDH (Dynamic Delta Hedging) have highlighted several important points. Firstly, Deribit currently displays delta calculated using real-time implied volatility (IV). The core difference between using real-time IV and fixed IV for DDH lies in how traders manage their vega profits and losses. Secondly, DDH is primarily used to control risk by replacing large single losses with multiple small losses, rather than to generate profits.