Can mainlanders apply to travel to Australia and stay in Hong Kong temporarily?

I suggest you ask the Australian Consulate in Hong Kong. . You can also go to the website of immi, the Australian Immigration Bureau. Free travel in Australia requires bank deposit certificate, birth certificate, air ticket and hotel reservation certificate. Your cousin's information in Australia, and the study certificate issued by your educational institution in Hong Kong. A copy of the first face of your temporary id card passport can be found on the immi website. All non-English documents need to be translated and important documents need to be notarized. In this case, you can apply for an Australian tourist visa in Hong Kong without joining a tour group. For details, please check the travel visa checklist on immi website to see what other documents need to be provided. When inquiring, you should inquire according to the four countries. Level 4 is the application level of Chinese mainland in Australian Immigration Bureau.