I remember reading a book before, which mentioned that when there are only two people, they can communicate directly and make associations, but if one person is added at this time, the relationship and communication between the three people will produce countless changes. The once popular dual-currency model, axis infinity with a market value of tens of billions of dollars, or StepN, which soared to $4 billion in 2 weeks, is built on the basis that users come to demand quick and high returns for gold, and it will definitely not work in the end. At this point, the entire industry and users are trembling about the dual-currency model, believing that there is no way out. And everyone forgets that the dual-currency model once created a madness of tens of billions of dollars. What's the problem? There is one less variable to balance the relationship between the dual currency model, and the new variable, that is, the integral, is not on the chain, but it plays a vital role in making the dual currency model a real long-term and lasting growth.