In online discussions, there are several common methods to suppress dissenting opinions and put pressure on their supporters by manipulating or distorting the flow of information. These methods include: 1. **Information bubbles**: Through algorithmic recommendations, users are only exposed to information that agrees with their own views, leading to the isolation and neglect of different opinions. 2. **Opinion manipulation**: Using social media platforms to create a public opinion frenzy in discussions through fake accounts (robots) or water armies to drown out different opinions. 3. **Censorship and deletion**: In discussions, actively report the speech of dissenters, resulting in their comments being deleted or their accounts being banned, thereby suppressing different voices. 4. **Offensive speech**: Putting pressure on dissenters through personal attacks, defamation or cyber violence so that they dare not express different opinions. 5. **Labeling and stigmatization**: Labeling people with different opinions with negative labels, such as "traitors" and "irrational", to weaken the credibility of their positions. 6. **Misleading information**: Spreading false or one-sided information, distorting or simplifying different opinions, making them seem unreasonable or illogical. 7. **Emotional appeal**: Using emotional factors to stimulate oppositional emotions, so that supporters feel that any dissent may threaten their interests or values, so that they are more united and resist different voices. 8. **Platform rule utilization**: Using the platform's community guidelines to selectively enforce the rules and impose sanctions on those who hold different opinions. 9. **Information overload**: By publishing a large amount of related content, normal discussions become chaotic and dissidents are difficult to get attention and support. These methods can effectively limit the expression of different opinions, thereby creating a single public opinion environment and affecting public cognition and discussion dynamics.