You can search the latest hot events through the search engine, and then collect the recent hot events on the network, and copy the hot event data from the search engine for manual monitoring. You can also use the online public opinion monitoring system, such as Ant Square software, which is a system tool for monitoring online public opinion. At present, the system is free for trial. By setting "hot events" as the monitoring keywords in the system, the public opinion monitoring system will automatically retrieve the public opinion information related to the whole network, so as to facilitate the understanding of recent hot events on the network.