Hurro originated from the way the Chinese say "hello" although now it means much more. It means "what?" Or anything around that. If some says something confusing you could say "Hurro" it is pronounced her-ow. If you pronounce it wrong it can't be understood. When most people say "Hurro" the say it questioning something like "Hurro?" So when you're saying the the
ro part of Hurro it's usually said
highering your voice so it comes off as a question. "Hurro" has come to mean much more than
it started as.