what counts for the immigration department is : if you are born overseas. what was the nationality of your parents at that particular time. if it Chinese (this is what you have got to prove!!!!! Chinese passport?). then there is no problem. and you can "inherit" the Chinese nationality. and so their permanent residency and the right of abode. for persons born outside HK. the most important point is C. the other schedules are irrelevant.
"a. A Chinese citizen born in Hong Kong before or after the establishment of the HKSAR
b. A Chinese citizen who has ordinarily resided in Hong Kong for a continuous period of not less than seven years before or after the establishment of the HKSAR.
c. A person of Chinese nationality born outside Hong Kong before or after the establishment of the Hong Kong Special Administrative Region to a parent who, at the time of birth of that person, was a Chinese citizen falling within category (a) or (b)."
From:
http://www.immd.gov.hk/ehtml/topical_3_4.htm
But if you were able to acquire foreign nationality at time of birth. The IMMD will reject your application because of the Chinese nationality law article 5. and then you won't be able to "inherit" the right of abode under schedule C.
"Article 5 Any person born abroad whose parents are both Chinese nationals or one of whose parents is a Chinese national shall have Chinese nationality. But a person whose parents are both Chinese nationals and have both settled abroad, or one of whose parents is a Chinese national and has settled abroad, and who has acquired foreign nationality at birth shall not have Chinese nationality."
from:
http://www.immd.gov.hk/ehtml/chnnationality_1.htm