Okay, the user sent "not done". Let me check the translation rules again. The first rule says to translate all content into Simplified Chinese. The second rule states that if the content is already in Simplified Chinese, output it unchanged. The third rule says to provide only the translation result with no explanations.
So, "not done" is in English. I need to translate it into Simplified Chinese. The correct translation would be "未完成". I should make sure there's no explanation, just the translation. Let me confirm that "未完成" is the right term here. Yes, it means "not done" or "unfinished". Alright, that's all. Just output "未完成".