Sister K used to run an internet cafe business in Beijing, and accidentally came into contact with the mining business, so she started mining in 2017, but she didn't make any money in 2017, but lost a lot. She really made money in the 2020-2021 wave, and truly achieved at least A9 level. It is true that some people have made money through the currency circle. Some people make money through spot, some through gamefi, some through contracts, some through rebates, some through wool, some through knowledge payment, etc. In short, this circle is like the Eight Immortals crossing the sea, each showing their magical powers. How much money you can make through this circle depends on your ability.