Domestic Bitcoin traders are starting to pull out. USD exchange rate: 6.9688 USDT is currently at 6.87 Negative premium: 1.4% If you have a Hong Kong bank card and a way to transfer funds back, you can make money through arbitrage. But with increasingly strict foreign exchange controls on virtual currencies, if you're not physically overseas, proceed with caution. Many U-cards have wear-and-tear costs of around 1-2%. When there's a negative premium, using U-cards becomes very cost-effective. In the past, when people did arbitrage, the negative premium usually wouldn’t stay below 3% for long (a few weeks). Even at 2%, it would attract a lot of people to jump in. This time seems different. Let’s wait and see if the negative premium reaches the 2-3% range. If it stays at a negative premium of 3% for a while, that could be a sign of systemic risk, and everyone should be cautious.