Persevere in studying PhD in England or in Australia. Doctoral direction is pedagogy.

The premise of an Australian work visa is that you have to find a job. You can't apply for a work visa if you don't have a formal job. Britain is better. Now that I have studied for a PhD, I must have a job. Even with a four-year work permit and no formal job, what's the point of staying there to wash dishes? You'd better go back to China after graduation. Don't delay.