The only flaw is that my wife remembers the password, so if she accidentally buys a counterfeit B, everything will be wiped out after two years. So the conclusion is 1. Buying counterfeits has already caused losses 2. It has risen, but my wife also forgot the password 3. It has risen again, and my wife has already stolen the USB drive and the safe to transfer everything out. Before divorce, she also wants to split half of the house. Anyway, this money is probably gone. It's better to keep it on the exchange.