Which is the Beijing-Australia study abroad agency? I've heard of nova. So what?

It's good. You can consider choosing them. There are still many intermediary companies studying in Beijing, but I suggest you choose an institution that started in Australia. When you say nova, you mean it started in Australia, with its headquarters in Sydney, and branches in other key cities in Australia, such as Melbourne and Brisbane. Two of my classmates are studying in Australia, and they both say that Nova is very famous in Australia. Because it's professional and has a good reputation, the business is relatively large now, and there are also branches in Beijing. They can study abroad or emigrate. I don't know if you want to study in Australia or immigrate. You can go to official website or WeChat to search their contact information and consult directly.