For this kind of b, I don't have any particularly strong opinions; just treat it like a lottery. Buying has a fee of 3.8, selling has a fee of 3.8, which means that for one buy and one sell, a total fee of 7.6 is charged. You can understand it this way, it's a capital pool, and making money relies entirely on luck. It's said that the total amount is 21 million, and currently, it's being promoted on x. It's somewhat similar to that kind of Pangu scheme, all based on local promotion; if one day the funding chain breaks, it will go to zero.