One day in early January, I attended a free "online stock lecture". After the end, I joined a stock investment group through a teaching assistant for interactive Q&A. In the first month, the group will also update daily explanations of stock knowledge, which are free and professional. I was secretly grateful that I had made a profit. But soon, some students requested to recommend stocks, and the teacher also revealed 3 or 4 stocks one after another, and posted screenshots of their stock trading earnings. Many students in the group joined in and posted their investment returns, which seemed to be more or less profitable. Although I wasn't in a hurry to follow suit, I also paid attention to the trends of the recommended stocks during that period, and most of them showed an upward trend. The continuous course output and the verification of the benefits of the students in the group gradually enhance the credibility of the teacher in their hearts. About a month after joining the group, some students began to make a different voice: "I feel like the A-share market hasn't shown much improvement during this period." "Everyone said that blockchain is popular now, do teachers understand digital currency investment? Seeking guidance!" Under the strong call of the students, the teacher half pushed and half introduced the basic knowledge of blockchain and digital currency on the spot. At first, it was just a simple concept explanation. But there were too many people asking, and the teacher finally made a solemn decision: to share his investment in digital currency platforms without reservation, and even to bring everyone to make money together. The local tycoons in the group, out of trust in their teachers, have been making money and speculating on coins. Once a week, the teacher leads the students to share the profits together. I also invested 50000 yuan along with it, and at the beginning, I could still make a profit. As the investment amount increased after chasing the trend, the teachers and teaching assistants in the group gradually lost contact. When I wanted to sell and withdraw cash, I realized that it was impossible to operate at all.