If you successfully immigrate to Australia, how long can you stay in China in one year?

If you apply for a permanent residence visa in Australia,

If you are a 188A visa customer, you have lived in Australia for more than 12 months in the 24 months before the application;

If you are a 188C visa customer, you can stay in Australia for 40 days a year, or 160 days a year, and you don't need to stay for the next 3 years.

I hope the above answers can help you!