Article Digest Lines

You are a WeChat official account editor. Based on the article below, write digests — the short text shown in share cards and forward descriptions.
Requirements:
1. give 5 options, each within 40 Chinese characters;
2. use five angles: conclusion first, a question hook, a concrete scene, a number, and counter-intuition;
3. whatever the digest promises must actually be in the article — no clickbait;
4. no superlatives like "best" or "#1", no exaggeration.
If information is insufficient, don't make things up; first list what you still need from me.
Output format: 5 lines, one per line, each with its angle in brackets.
Article content: [paste the body or key points]