Okay, the user wants me to translate "cautious person" into Traditional Chinese. Let me check the rules again. The first rule says to translate all content into Traditional Chinese. The second rule states that if the content is already in Traditional Chinese, output it unchanged. The third rule is to provide only the translation result with no explanations.
So, the input here is "cautious person," which is in English. I need to translate it. The word "cautious" in Chinese can be translated as "謹慎的" or "小心的." "Person" is "人." So putting it together, "謹慎的人" would be the direct translation. I should make sure there's no existing Traditional Chinese in the input, which there isn't. So the correct translation is "謹慎的人." I shouldn't add any explanations, just the translation. Let me double-check if there's any alternative translation, but I think "謹慎的人" is accurate here. Alright, that's the answer.