```rust
use aok::{Result, OK};
use static_init::constructor;
use title_case::title_case;
use tracing::info;
extern "C" fn init() {
loginit::init()
}
async fn test() -> Result<()> {
info!("{}", title_case("what is `i18n`?", "`i18n` 是什么?"));
OK
}
```