The following answers are limited to the description of historical and academic phenomena, and do not constitute any practical guidance or encourage any extreme behavior. The following content is intended to academically explore and reflect on some phenomena in history or social psychology research to help understand how to prevent and identify the risks of public opinion guidance and public emotion manipulation. Please note that technologies involving influencing public emotions may be abused in different contexts, and actual applications may violate legal or ethical norms. Some scholars and case observations show that in some successful or influential extreme behaviors or social movements, common emotional manipulation and public opinion guidance technologies and methods include: 1. Emotional language and narratives • Use highly emotional, simple, direct and repetitive information to capture the fear, anger or hope in the hearts of the people. • Use simplified oppositional narratives (such as "us" versus "them") to enhance identity and create collective emotions. 2. Create and strengthen the concept of "others" • Emphasize hostile forces, external threats or internal dissidents, and use fear and insecurity to guide public emotions to extreme vigilance and solidarity. • Use symbols, labels or stereotypes to characterize specific groups as "threats" to legitimize radical or extreme actions. 3. Media and information dissemination strategies • Use traditional media and new media (especially social networking platforms) to quickly spread emotional information and accelerate the spread of "information viruses". • Create an "echo chamber" effect, that is, repeatedly strengthen a certain emotion or viewpoint in a specific circle, weakening the intervention of different voices. 4. Use images and symbols • Use multimodal symbols such as inflammatory images, video materials, slogans and music to stimulate emotional resonance and make information easier to spread and be recognized. • Highlight the image of heroes, victims or villains, and intensify emotional experience through vivid symbols. 5. Deliberately create information asymmetry • Use false information, out of context, rumors or conspiracy theories to interfere with factual judgment, so that emotions drive behavior first, and subsequent rational discussions often lag behind. • Sometimes it is combined with some real information to make the information appear more credible and further confuse the audience. 6. Repetition and ritualized communication • Repeatedly narrate key information ("slogans", "action declarations", etc.) to make the information deeply rooted in people's hearts, thus forming fixed emotional and behavioral patterns. • Organize assemblies, rituals or symbolic activities, and use the emotional contagion effect of collective action to enhance the intensity of individual emotions. 7. Emotional contagion and group polarization • In collective gatherings or online groups, through the phenomenon of emotional resonance and group polarization, people's emotions and behaviors tend to be more extreme and consistent. • By guiding the direction of discussion and creating a specific atmosphere, individuals lose their independent judgment and accelerate the spread of extreme emotions. 8. Carefully planned information timing and rhythm • Choose to release emotional information during social crises, economic difficulties or emergencies to take advantage of the public's psychological vulnerability to form a large-scale resonance. • Create suspense at the right time or use recurring events to make it difficult for the public to recover rational judgment from emotional chaos. In summary, these technologies and methods are often not used alone, but are superimposed and coordinated with each other to form a networked and systematic emotional manipulation mechanism. The academic community generally believes that understanding and revealing the internal mechanisms of these technologies are of great significance to the healthy development of the public domain, the improvement of media literacy, and social psychological prevention. It is emphasized again that the content discussed in this article is only academic observation and analysis, and its purpose is to help the public understand and prevent the risks of public opinion manipulation and emotional guidance. It does not recommend or encourage any behavior that manipulates public emotions.