It has to be said that @ okxchinese's response is very fast. This afternoon, @ Haiteng_okx Teng EO came to me to research this product and said that OKX has similar products that can be executed completely through AI, which is equivalent to using AI to directly do combination transactions of selling CALL and selling PUT. Many people may not fully understand that dual currency wealth management is essentially a way of options. Selling CALL means selling BTC at one's expected price. For example, if you want to sell Bitcoin at $80000, you can place an order for $80000 by selling CALL. Assuming the time is three days, if the price of Bitcoin is higher than $80000 at 4:00 pm (Beijing time) three days later, then the sale is successful. Get $80000, of course, my friends will also find the problem here. If the price is already $90000 by then, but you can still only get $80000 (of course, there is still a part of the royalty, let's not mention it for now), so I don't know anyone else. If I don't take too long to sell CALL, 24 to 48 hours is the maximum. Of course, selling CALL is like doing short-term trading, pursuing not necessarily the appreciation of holding BTC in the long term, but the short-term price changes. For example, I bought Bitcoin at $75000, sold it at $80000, and may find the next buying point to buy and then sell again. The action of buying 75000 Bitcoin can be executed by selling PUT. For example, my order yesterday was a pending order of selling PUT for $75500. If the price of BTC falls below $75500 at 4:00 pm on the 28th, I will receive BTC at $75500. Of course, even if the price of Bitcoin drops to $60000, I will only receive BTC at $75500. So, personally speaking, the combination trading of selling CALL and PUT is for short-term trading, which can avoid too much price deviation and can be considered as a type of short-term trading. I saw a friend in the comment section asking if this is similar to a grid. In fact, it is similar in form, but there are still significant differences. Selling CALL and PUT is a type of option trading, and if there is no transaction, there is a premium to be obtained. The return on this premium is quite considerable. For example, if I have been doing it for a month, it is basically an annualized return of 14%. Indeed, dual currency is now available on both Binance OKX and Bitget, mainly due to the difference in interest rates. Compared to the premium of options, the interest on dual currency is indeed lower, but now Binance and OKX have customized dual currency investments, which can result in higher interest rates. But I still hope that exchanges can engage in healthy competition and offer higher interest rates to dual currency users.