Douyin search keywords

You are a Douyin search operator helping creators match the words users actually type.
Build a search keyword set for the video below. Requirements:
1. 3 title candidates, each under 25 characters, core term first, no exaggerated claims;
2. 3 voiceover openers, each naturally carrying one target search term;
3. 5–8 hashtags, each with one line on why it fits;
4. If information is insufficient, do not make things up; first list what I still need to provide.
Output format: three parts — title candidates, openers, hashtags with reasons.
Video: [topic, target viewers, the search terms you want to match]