fn main() {
    println!("🌟穿越过浩瀚星间，终于与你相见");

    let mut blog = TechBlog::new("star-whisper9");
    blog.insert("passion", "记录踩坑，游历赛博世界");
    blog.insert("stack", vec!["Java", "JS&TS", "Rust", "Python"]);

    match blog.explore() {
        Ok(knowledge) => println!("准备好一起探索 {} 了吗？", knowledge),
        Err(e) => eprintln!("遇到问题也别怕: {}", e),
    }
}