That depends on how you define "Internet". If the Chinese national TCP/IP infrastructure is largely isolated from the rest of the world by the Great Firewall then can we legitimately call it part of the Internet?
Technical infrastructure and censorship are 2 different things, and effective censorship in highly technical society emphasizes and illustrates the scale and capabilities of the authoritative power oppressing the population.
Functionally for our intents and purposes there is little difference between having no internet and having a national intranet which is cut off from the rest of the world and literally policed by the government. Technically the walled garden FB wanted to set up in India was "internet" too.
Plus as we've determined, the internet has spread to 60% of Chinese at best, and majority urban areas.