Now I somewhat understand why Binance options no longer offer the seller function.

The sell put and sell call in dual currency investment are essentially the option sellers.

However, retail investors engaging in dual currency investments cannot close positions in advance to lock in profits; they can only wait until expiration, which is a disadvantage. The advantages are zero fees, zero delivery fees, and zero slippage.

So, retail investors should all engage in dual currency investments; it's essentially an options selling strategy dressed up as wealth management. Haha.

In fact, some exchanges also offer dual currency investments, which are very suitable for those who do not understand options but want to achieve high returns from them.

Once you fall in love with dual currency investments, you will gradually become dissatisfied with the mechanical returns at expiration; you will actively learn about options knowledge and expand into new territories, where you will meet us at Duck Station!