The tables above are the backend data for April-May 2026 from a reproductive medicine expert's Douyin (TikTok) social media account. Strictly based on these tables, analyze the data in detail according to the following questions:
1. Which videos have over 10,000 plays? List their titles and explain the likely reasons.
2. Which videos have over 5,000 plays? List their titles and explain the likely reasons.
3. Which videos have fewer than 1,000 plays? List their titles and explain the likely reasons.
4. Which videos have a 5-second completion rate over 30%? List their titles and explain the likely reasons.
5. Which videos have a 5-second completion rate over 20%? List their titles and explain the likely reasons.
6. Which videos have more than 10 profile visits? List their titles and explain the likely reasons.
7. Which videos have more than 50 profile visits? List their titles and explain the likely reasons.
8. Which videos have more than 100 profile visits? List their titles and explain the likely reasons.
