The reason for freezing the wallet is that the shareholders behind these major exchanges are BlackRock and Vanguard Group. Essentially, OKX and Binance Bybitbg are one company, but OKX is 80% controlled by China. If they want to explore foreign markets, they must invest 100% in BlackRock. The companies behind the exchanges are not directly controlled by BlackRock and Vanguard Group, but the highest point of their shareholders' companies is BlackRock and Vanguard Group,