Should China's identity card be taken away after emigrating to Australia to get a green card? What about the hukou? How can we clearly understand the relevant situation?

You got an Australian green card, PR. At this time, you are still from China, and you have China's passport and ID card account book. However, if you apply for Australian citizenship, since China does not recognize dual citizenship, you are an Australian at this time, and you will automatically give up your China citizenship. Your ID card and household registration will not be taken away, but you need to apply for a visa every time you return to China.