One day in early January, I attended a free "online stock lecture." After the end, I joined a stock investment group through the teaching assistant for interactive Q&A. For the first month, the group will update the explanation of stock knowledge every day, the content is free, and the professional degree is not bad. And I'm glad I made it. However, soon, some students asked to recommend stocks, and the teacher also revealed 3 or 4, and showed their own stock income screenshots. Many students in the group to follow the investment, and show their investment income, looking at more or less have earned. Although I didn't rush to follow suit, I also paid attention to the trend of the several recommended stocks during that period, and most of them rose. The continuous course output and the benefit verification of the students in the group make the credibility of the teacher gradually improve in the mind. About A month after entering the group, there began to be students, and made a different voice: "I feel that during this period of time, there is no improvement in A-shares ah." "All say that blockchain is hot now, do you understand digital currency investment? Please bring me!" Under the strong appeal of the students, the teacher half-heartedly introduced the basic knowledge of blockchain and digital currency. At first, it was just a conceptual explanation. But there were too many people who asked, and the teacher finally decided to share his platform for investing in digital currency without reservation, and even to make money with everyone. The local rich in the group, out of trust in the teacher, have money speculation. Once a week, the teacher brings the students to share the profits. I also invested 50,000 yuan, which was profitable at the beginning, but as the amount of investment increased, the teachers and assistants in the group gradually lost contact, and when I wanted to sell for cash, I found that it was impossible to operate.