The tricks of paid groups—personal experience. The Ethereum ICO created a myth. At that time, a platform called Yuanbao.com Trading Platform launched something called Smart Workshop, claiming to surpass Ethereum. After a period of hype, I paid 999 to join a group. Every day, the group was full of enthusiasm, and I was pumped up. I had just graduated from college then and had never experienced such a scene. So I decided to give it a try, but later I lost 3,000 yuan. After that, the group became quiet.