There are many ways to convince people of the authenticity of an unreal activity, but it should be noted that these methods may involve ethical and legal issues. Here are some possible strategies: 1. **Evidence fabrication**: Creating seemingly real evidence, such as photos, videos, documents, etc., can make people feel trustful. 2. **Social proof**: Taking advantage of people's trust in the group, if many people claim to participate in or support this activity, more people may believe its authenticity. 3. **Emotional resonance**: Stimulating emotions by telling touching stories or cases, making it easy for people to empathize and trust. 4. **Authoritative support**: If there are authoritative people or institutions supporting this activity, it may increase its credibility. For example, celebrity endorsements or government statements. 5. **Social media communication**: Using the power of social media to create topics or heat, widely disseminate, and increase exposure. 6. **Psychological suggestion**: Through repeated publicity and suggestion, people gradually accept the existence of this activity. 7. **Using cognitive bias**: For example, taking advantage of people's confirmation bias, they only pay attention to information that is consistent with the activity and ignore rebuttal opinions. Regardless of the method used, any behavior that involves deceiving or misleading others is unethical and potentially illegal, so it needs to be treated with caution.