In online novels, the way characters use social networks to spread false and harmful information to attack competitors can be described in the following steps: 1. **Creating false news**: Characters may prepare some false information in advance, such as negative news about competitors, scandals, or product quality issues. This information often has exaggerated or inflammatory content to attract readers' attention and discussion. 2. **Disguise identity**: In order to increase the credibility of the information, characters may use fake accounts or pretend to be third parties to post these messages. They can create seemingly real social media accounts to increase the credibility of the information. 3. **Use social media platforms**: Characters can post these false news through popular social networks (such as Weibo, WeChat, Twitter, etc.) and use the sharing function of the platform to make the news spread quickly. They can also use hot topic tags to attract more attention. 4. **Create an atmosphere of public opinion**: Characters may speak on multiple social media platforms at the same time, and create a false impression of "everyone knows" through comments, reposts, and likes, so that more people believe the authenticity of these false information. 5. **Hiring a troll army**: To expand their influence, the character may hire a troll army (i.e. hired commentators or promoters) to make a large number of comments and forwarding, further promoting the spread of false news. 6. **Using media platforms**: In some cases, the character may also try to contact some small media or bloggers to report the news, thereby increasing exposure and credibility. 7. **Exploiting public psychology**: The character may take advantage of the public's existing prejudice against competitors and cleverly combine false information with public sentiment to enhance the influence of the news. 8. **Monitoring feedback and adjusting strategies**: By observing the audience's reaction to false news, the character can adjust its communication strategy and continue to strengthen certain aspects or correct the information to achieve better results. Through the above means, the character can effectively spread false news through social networks, thereby achieving the goal of attacking competitors. This plot not only shows the risks of online information dissemination, but also triggers readers to think about trust and truth.