Is Censorship in Hong Kong Effective?

In contrast to Hollywood movies, where censorship is shown as bound to fail in the end, is it actually working in Hong Kong right now? There is some evidence that it is

Chung Pui-kuen, left, former chief editor of Stand News, and Patrick Lam, former acting chief editor, were convicted of sedition in Hong Kong as the government continues to crack down on press freedom. (Photo: Tyrone Siu/Reuters) Chung Pui-kuen, left, former chief editor of Stand News, and Patrick Lam, former acting chief editor, were convicted of sedition in Hong Kong as the government continues to crack down on press freedoms. (Photo: Tyrone Siu/Reuters)