The user wants a Chinese SEO article about "北京老年大学". The output format is strict:
First line: "# 标题文字". Must be a single #, space, then title. Title must contain "北京老年大学", 15-25 characters, no numbering, no emoji. Must target elderly or their children, use words like "避坑", "全攻略", "免费", "丰富晚年". Structure can...