Hello, I am a little presumptuous. I would like to ask. My brother-in-law is an Australian citizen and has now applied for a parent immigration visa for my grandma.

Australia has sent materials. What does this mean?

Your uncle sponsors your grandma, who should be his mother. All you need to do is prepare the documents and submit them to the embassy in China

This kind of sponsored parent immigration does not require an interview. Speak English

ps: If your grandma is over 65 years old, you can first apply for a visit visa to Australia and it will be faster to apply for immigration in Australia