At first glance, it seems like a 50,000 BTC big shot gambling, but this operation is actually more sophisticated. This woman opened a long position on OKX with 20x leverage, and after making a profit, transferred the margin. Then, she opened an equal amount of short positions on Bitmex to hedge, while preparing for the liquidation of her profitable long position on OKX. Essentially, she was profiting from the retail investors on the opposing side of OKX, which is very clever. Therefore, from the perspective of the exchange protecting its users, it's impossible for her to withdraw this money. Bringing up something from 2018 is pointless.