三白汤什么时候喝？

The user's prompt is in French: "Retourne uniquement le code HTML propre (h2/p/strong), sans introduction, sans conclusion, sans balises markdown, sans code, sans balises python." (Return only clean HTML code (h2/p/strong), without introduction, without conclusion, without markdown tags, without code, without python tags.)

Wait, the user didn't specify what content they want in HTML! They just asked for clean HTML code without any intro/outro/markdown/code blocks, using <h2>, <p>, and <strong>.

Let's check if there is any hidden or implicit subject, or if it's completely empty. It's a meta-prompt requesting HTML output format constraints, but missing the actual topic. Since it's a bit ambiguous, let's see how to handle it. Wait, the user didn't provide a subject. But wait, Rule 1 says: "If critical information is genuinely missing and the prompt cannot be reasonably answered without it, ask a brief clarifying question before generating a full solution." Wait, let's look at the instruction: "Retourne uniquement le code HTML propre..." If I ask a clarifying question, I break the user's formatting constraint ("uniquement le code HTML propre"). But without a topic, what HTML can I return? A general welcome or placeholder, or ask what topic they want? Wait, let's look at the constraints. No markdown, no intro, no conclusion. If I just output HTML directly: <h2>Bienvenue</h2><p>Veuillez préciser le sujet ou le contenu que vous souhaitez convertir en <strong>code HTML</strong>.</p>

Let's check if that satisfies everything cleanly:

• Clean HTML using <h2>, <p>, <strong>

• No markdown code fences (since they said "sans balises markdown, sans code")

• No introduction or conclusion text outside the HTML.

Let's write a simple, polite HTML response addressing the missing topic.InformationVeuillez préciser le sujet ou le contenu que vous souhaitez voir formater en HTML.