必须包含 开头导语和结尾总结 So in the HTML, before and after the h2 sections, I need a proper introduction and conclusion paragraph. Let me adjust.
Full content_html structure:
- Start with opening paragraph (introduction).
- Then
sections.
- Then conclusion paragraph.
Okay, refine the HTML to have: Opening statement, then three h2 sections, then closing statement.
And ensure word count.
Output JSON now.}
