When it comes to written language, there are formal and informal styles. I am a Mandarin speaker and can read texts and social media pretty well because it follows many spoken conventions. But I have great difficulty with the styles employed in most Chinese newspapers. It's not just the vocabulary, there are written conventions that I don't hear in conversational settings. One exception: The Apple Daily (蘋果日報) which uses a different written style for headlines, infographics, and body text. It's less formal, more colloquial, and easier to understand.