Since I'm not finding any immediate references to "She Liu" in the context of PDF features, perhaps the user is referring to a misspelling or a very specific niche term. I should ask for clarification, but since I need to provide a helpful answer, I'll outline possible interpretations and suggest checking the name accuracy. Additionally, I can list common PDF features that might be relevant in a Chinese context, such as support for Chinese language text, specific encoding standards, or multilingual annotations.