The Internet is known as the "fifth space" and is often regarded as the 'biggest variable' China has the largest digital society in the world, with more than 1 billion netizens. When ordinary people go online, their public opinion will also go online.

Xi Jinping emphasized the role of the Internet in reflecting social conditions and public opinion, and on the other hand, he also pointed out the significance of building a good network ecology. The development of information technology continues to expand people's cognitive boundaries for "security"