KIA,
1) Apply for Chinese naturalization.
Processing time varies but expecting between 2-6 months.
2) HKIMMD will send a letter saying that you have to renounce the existing nationality and produce proof to them for issuing Chinese naturalization certificate.
3) Take this letter to Indian Consulate and renounce your Indian nationality. CGI will issue affidavit.(take 0.5-1 hr) Better do it in morning.
4) Take this affidavit to HKIMMD on same day afternoon. You need to sign a form to let HKIMMD requests your personal particulars in CGI. The HKIMMD will contact CGI by fax. (This could be done on same day. CGI will reply very quick. Just stand near the IMMD counter. For fastest trace, you can directly call CGI and tell them to reply back the HKIMMD's fax)
5) CGI will respond back by fax
6) The HKIMMD will call you to collect the naturalization Certificate.(If you stand near by, just by sign language).
7) The HKIMMD will issue the certification
8) Apply HKSAR passport(Same day also ok)
9) Apply HKID for ***. (You should have a chinese name for apply for China Home Return Card as the Chinese name is mandatory)
If you do pt-9 first then your HKSAR pp shoul also have Chinese name.
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Apply for OCi (Overseas Citizenship of India)
Overseas Citizenship of India (OCI)
1) Call CGI and make appointment
2) Ask them what supporting docs need to submit.
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Apply for (China) Home Return Card
You cant carry your HKSAR pp to enter China. So you should apply this in CTS.
After you collect HKID ( the original one, not the paper one), you can submit the appln for HRC in CTS. Normal process time is 10 working days.
But in may case(for all naturalized chinese), it almost more than 3 months still not ready. And advised by CTS staff, it will take 120 days. I think its because of Olympic.
For my case:
1) Naturalization - 2~3 months
2) Renounce existing nationality - 0.5 day
3) Issue Chinese naturalized certificate & apply HKSAR passport - 0.5 day
4) HKID - depends on availabilty. (3 hrs)